diff --git a/app/package-lock.json b/app/package-lock.json
index 11f2758..63494af 100644
--- a/app/package-lock.json
+++ b/app/package-lock.json
@@ -87,6 +87,19 @@
         }
       }
     },
+    "@material-ui/lab": {
+      "version": "3.0.0-alpha.27",
+      "resolved": "https://registry.npmjs.org/@material-ui/lab/-/lab-3.0.0-alpha.27.tgz",
+      "integrity": "sha512-VwUCXEJEo1QkSTDoAg5g8K51f6Re7Fh5d7m5IO9W95B9iEYVJhSGy+WY1/ZQdpJl1F1gPzL9u2asCg6LIazBLA==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "7.2.0",
+        "@material-ui/utils": "^3.0.0-alpha.2",
+        "classnames": "^2.2.5",
+        "keycode": "^2.1.9",
+        "prop-types": "^15.6.0"
+      }
+    },
     "@material-ui/utils": {
       "version": "3.0.0-alpha.2",
       "resolved": "https://registry.npmjs.org/@material-ui/utils/-/utils-3.0.0-alpha.2.tgz",
@@ -129,10 +142,21 @@
       "version": "16.0.11",
       "resolved": "https://registry.npmjs.org/@types/react-dom/-/react-dom-16.0.11.tgz",
       "integrity": "sha512-x6zUx9/42B5Kl2Vl9HlopV8JF64wLpX3c+Pst9kc1HgzrsH+mkehe/zmHMQTplIrR48H2gpU7ZqurQolYu8XBA==",
+      "dev": true,
       "requires": {
         "@types/react": "*"
       }
     },
+    "@types/react-redux": {
+      "version": "6.0.12",
+      "resolved": "https://registry.npmjs.org/@types/react-redux/-/react-redux-6.0.12.tgz",
+      "integrity": "sha512-fvcpm7cfW/JMflRdZgegCVbSGYt/hyEWQKriesaLZDRDjBGKQsAiui08VCQg5lBpocPmulVGKFhICtOAcMUPOQ==",
+      "dev": true,
+      "requires": {
+        "@types/react": "*",
+        "redux": "^4.0.0"
+      }
+    },
     "@types/react-transition-group": {
       "version": "2.0.15",
       "resolved": "https://registry.npmjs.org/@types/react-transition-group/-/react-transition-group-2.0.15.tgz",
@@ -2892,6 +2916,15 @@
       "resolved": "https://registry.npmjs.org/interpret/-/interpret-1.2.0.tgz",
       "integrity": "sha512-mT34yGKMNceBQUoVn7iCDKDntA7SC6gycMAWzGx1z/CMCTV7b2AAtXlo3nRyHZ1FelRkQbQjprHSYGwzLtkVbw=="
     },
+    "invariant": {
+      "version": "2.2.4",
+      "resolved": "https://registry.npmjs.org/invariant/-/invariant-2.2.4.tgz",
+      "integrity": "sha512-phJfQVBuaJM5raOpJjSfkiD6BpbCE4Ns//LaXl6wGYtUBY83nWS6Rf9tXm2e8VaK60JEjYldbPif/A2B1C2gNA==",
+      "dev": true,
+      "requires": {
+        "loose-envify": "^1.0.0"
+      }
+    },
     "invert-kv": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/invert-kv/-/invert-kv-2.0.0.tgz",
@@ -4202,6 +4235,20 @@
       "resolved": "https://registry.npmjs.org/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz",
       "integrity": "sha512-fBASbA6LnOU9dOU2eW7aQ8xmYBSXUIWr+UmF9b1efZBazGNO+rcXT/icdKnYm2pTwcRylVUYwW7H1PHfLekVzA=="
     },
+    "react-redux": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/react-redux/-/react-redux-6.0.0.tgz",
+      "integrity": "sha512-EmbC3uLl60pw2VqSSkj6HpZ6jTk12RMrwXMBdYtM6niq0MdEaRq9KYCwpJflkOZj349BLGQm1MI/JO1W96kLWQ==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.2.0",
+        "hoist-non-react-statics": "^3.2.1",
+        "invariant": "^2.2.4",
+        "loose-envify": "^1.4.0",
+        "prop-types": "^15.6.2",
+        "react-is": "^16.6.3"
+      }
+    },
     "react-textarea-autosize": {
       "version": "6.1.0",
       "resolved": "http://registry.npmjs.org/react-textarea-autosize/-/react-textarea-autosize-6.1.0.tgz",
@@ -4265,6 +4312,16 @@
         }
       }
     },
+    "redux": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/redux/-/redux-4.0.1.tgz",
+      "integrity": "sha512-R7bAtSkk7nY6O/OYMVR9RiBI+XghjF9rlbl5806HJbQph0LJVHZrU5oaO4q70eUKiqMRqm4y07KLTlMZ2BlVmg==",
+      "dev": true,
+      "requires": {
+        "loose-envify": "^1.4.0",
+        "symbol-observable": "^1.2.0"
+      }
+    },
     "regenerator-runtime": {
       "version": "0.12.1",
       "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz",
diff --git a/app/package.json b/app/package.json
index 1957c89..f32bdc9 100644
--- a/app/package.json
+++ b/app/package.json
@@ -11,13 +11,18 @@
   "license": "ISC",
   "devDependencies": {
     "@material-ui/icons": "^3.0.1",
+    "@material-ui/lab": "^3.0.0-alpha.27",
+    "@types/react": "^16.7.18",
+    "@types/react-dom": "^16.0.11",
+    "@types/react-redux": "^6.0.12",
+    "react-redux": "^6.0.0",
+    "react-transition-group": "^2.5.2",
+    "redux": "^4.0.1",
     "webpack-livereload-plugin": "^2.2.0"
   },
   "dependencies": {
     "@material-ui/core": "^3.7.1",
     "@types/node": "^10.12.18",
-    "@types/react": "^16.7.18",
-    "@types/react-dom": "^16.0.11",
     "@types/sha1": "^1.1.1",
     "@types/socket.io-client": "^1.4.32",
     "@types/vis": "^4.21.9",
diff --git a/app/src/App.tsx b/app/src/App.tsx
index 178fd59..13ca3dc 100644
--- a/app/src/App.tsx
+++ b/app/src/App.tsx
@@ -1,13 +1,17 @@
 import * as React from 'react'
+import { connect } from 'react-redux'
+import { AppState } from './reducers'
+
+import { withStyles, Theme } from '@material-ui/core/styles'
+import CssBaseline from '@material-ui/core/CssBaseline'
+
 import * as q from '../../backend/src/Model'
 
-import { Tree } from './components/Tree/Tree'
+import Tree from './components/Tree/Tree'
 import TitleBar from './components/TitleBar'
 import Sidebar from './components/Sidebar/Sidebar'
 import Connection from './components/ConnectionSetup/Connection'
-// import { default as EventBus } from '../../events'
-
-import { withTheme, Theme } from '@material-ui/core/styles'
+import Settings from './components/Settings'
 
 interface State {
   selectedNode?: q.TreeNode,
@@ -17,6 +21,7 @@ interface State {
 interface Props {
   name: string
   theme: Theme
+  settingsVisible: boolean
 }
 
 class App extends React.Component<Props, State> {
@@ -29,40 +34,68 @@ class App extends React.Component<Props, State> {
 
   private getStyles(): {[s: string]: React.CSSProperties} {
     const { theme } = this.props
+    const drawerWidth = 300
     return {
       left: {
         backgroundColor: theme.palette.background.default,
         color: theme.palette.text.primary,
         height: 'calc(100vh - 64px)',
         float: 'left',
+        overflowY: 'scroll',
+        overflowX: 'hidden',
+        display: 'block',
         width: '60vw',
+      },
+      right: {
+        height: 'calc(100vh - 64px)',
+        color: theme.palette.text.primary,
+        float: 'left',
+        width: '40vw',
         overflowY: 'scroll',
         overflowX: 'hidden',
         display: 'block',
       },
-      right: {
-        height: 'calc(100vh - 64px)',
+      centerContent: {
+        width: '100vw',
+        overflow: 'hidden',
+      },
+      content: {
         backgroundColor: theme.palette.background.default,
-        color: theme.palette.text.primary,
-        float: 'right', width: '40vw',
-        overflowY: 'scroll',
-        overflowX: 'hidden',
-        display: 'block',
+        transition: theme.transitions.create('margin', {
+          easing: theme.transitions.easing.sharp,
+          duration: theme.transitions.duration.leavingScreen,
+        }),
+        marginLeft: 0,
+      },
+      contentShift: {
+        padding: 0,
+        backgroundColor: theme.palette.background.default,
+        transition: theme.transitions.create('margin', {
+          easing: theme.transitions.easing.easeOut,
+          duration: theme.transitions.duration.enteringScreen,
+        }),
+        marginLeft: drawerWidth,
       },
     }
   }
 
   public render() {
-    return <div>
-      <TitleBar />
-      <div>
-          <div style={this.getStyles().left}>
-            <Tree connectionId={this.state.connectionId} didSelectNode={(node: q.TreeNode) => {
-              this.setState({ selectedNode: node })
-            }} />
-          </div>
-          <div style={this.getStyles().right}>
-            <Sidebar node={this.state.selectedNode} />
+    const { settingsVisible } = this.props
+    const { content, contentShift, settings, centerContent } = this.getStyles()
+    return <div style={centerContent}>
+      <CssBaseline />
+      <Settings />
+      <div style={settingsVisible ? contentShift : content}>
+          <TitleBar />
+          <div style={centerContent}>
+            <div style={this.getStyles().left}>
+              <Tree connectionId={this.state.connectionId} didSelectNode={(node: q.TreeNode) => {
+                this.setState({ selectedNode: node })
+              }} />
+            </div>
+            <div style={this.getStyles().right}>
+              <Sidebar node={this.state.selectedNode} />
+            </div>
           </div>
       </div>
       <Connection onConnection={(connectionId: string) => this.setState({ connectionId })}/>
@@ -70,4 +103,10 @@ class App extends React.Component<Props, State> {
   }
 }
 
-export default withTheme()(App)
+const mapStateToProps = (state: AppState) => {
+  return {
+    settingsVisible: state.settings.visible,
+  }
+}
+
+export default withStyles({}, { withTheme: true })(connect(mapStateToProps)(App))
diff --git a/app/src/actions/Settings.ts b/app/src/actions/Settings.ts
new file mode 100644
index 0000000..c8e37e7
--- /dev/null
+++ b/app/src/actions/Settings.ts
@@ -0,0 +1,15 @@
+import { Action } from 'redux'
+import { ActionTypes } from '../reducers'
+
+export const setAutoExpandLimit = (autoExpandLimit: number = 0) => {
+  return {
+    autoExpandLimit,
+    type: ActionTypes.setAutoExpandLimit,
+  }
+}
+
+export const toggleSettingsVisibility = () => {
+  return {
+    type: ActionTypes.toggleSettingsVisibility,
+  }
+}
diff --git a/app/src/actions/index.ts b/app/src/actions/index.ts
new file mode 100644
index 0000000..d6d9e2b
--- /dev/null
+++ b/app/src/actions/index.ts
@@ -0,0 +1,3 @@
+import * as settingsActions from './Settings'
+
+export { settingsActions }
diff --git a/app/src/components/ConnectionSetup/Connection.tsx b/app/src/components/ConnectionSetup/Connection.tsx
index 21bb697..cbbdc6b 100644
--- a/app/src/components/ConnectionSetup/Connection.tsx
+++ b/app/src/components/ConnectionSetup/Connection.tsx
@@ -85,6 +85,7 @@ class Connection extends React.Component<Props, State> {
         this.props.onConnection(connectionId)
         this.setState({ visible: false })
       } else if (state.error) {
+        console.log('error', state.error)
         this.setState({ error: state.error })
       }
     })
diff --git a/app/src/components/Settings.tsx b/app/src/components/Settings.tsx
new file mode 100644
index 0000000..96fc505
--- /dev/null
+++ b/app/src/components/Settings.tsx
@@ -0,0 +1,121 @@
+import * as React from 'react'
+import * as q from '../../../backend/src/Model'
+
+import Drawer from '@material-ui/core/Drawer'
+import IconButton from '@material-ui/core/IconButton'
+import Paper from '@material-ui/core/Paper'
+import Divider from '@material-ui/core/Divider'
+import MenuItem from '@material-ui/core/MenuItem'
+import Select from '@material-ui/core/Select'
+
+import ChevronRight from '@material-ui/icons/ChevronRight'
+
+import { Typography, InputBase, Input, InputLabel } from '@material-ui/core'
+import { withStyles, StyleRulesCallback } from '@material-ui/core/styles'
+
+import { settingsActions } from '../actions'
+import { AppState } from '../reducers'
+
+import { connect } from 'react-redux'
+import { bindActionCreators } from 'redux'
+
+const styles: StyleRulesCallback = theme => ({
+  drawer: {
+    backgroundColor: theme.palette.background.default,
+    flexShrink: 0,
+  },
+  paper: {
+    width: '300px',
+  },
+  title: {
+    color: theme.palette.text.primary,
+    paddingTop: `${theme.spacing.unit}px`,
+    ...theme.mixins.toolbar,
+  },
+  input: {
+    margin: `auto ${theme.spacing.unit}px auto ${theme.spacing.unit}px`,
+  },
+})
+
+interface Props {
+  actions?: any
+  autoExpandLimit: number,
+  visible: boolean,
+  store?: any,
+  classes: any
+}
+
+interface State {
+}
+
+class Settings extends React.Component<Props, State> {
+  constructor(props: any) {
+    super(props)
+    this.state = {}
+  }
+
+  public render() {
+    const { classes, actions, visible } = this.props
+    return <Drawer
+      anchor = "left"
+      className = { classes.drawer }
+      open = { visible }
+      variant = "persistent"
+    >
+      <div
+        className = { classes.paper }
+        tabIndex = { 0 }
+        role = "button"
+        onClick = {(e: React.MouseEvent) => e.stopPropagation()}
+        onKeyDown = {(e: React.KeyboardEvent) => e.stopPropagation()}
+      >
+
+        <Typography className = { classes.title } variant = "h6" color = "inherit">
+          <IconButton onClick = {actions.toggleSettingsVisibility}>
+            <ChevronRight />
+          </IconButton>
+          Settings
+        </Typography>
+        <Divider />
+
+        {this.renderAutoExpand()}
+      </div>
+    </Drawer>
+  }
+
+  private renderAutoExpand() {
+    const { classes, actions, autoExpandLimit } = this.props
+
+    return <span>
+      <InputLabel htmlFor="auto-expand">Auto Expand</InputLabel>
+      <Select
+          value = { autoExpandLimit }
+          onChange = { (e: React.ChangeEvent<HTMLSelectElement>) => actions.setAutoExpandLimit(e.target.value) }
+          input = {<Input name="auto-expand" id="auto-expand-label-placeholder" />}
+          displayEmpty
+          name = "auto-expand"
+          className = {classes.input}
+      >
+        <MenuItem value = {0}><em>Disabled</em></MenuItem>
+        <MenuItem value = {3}>Some</MenuItem>
+        <MenuItem value = {10}>Most</MenuItem>
+        <MenuItem value = {1E6}>All</MenuItem>
+      </Select>
+    </span>
+  }
+}
+
+const mapStateToProps = (state: AppState) => {
+  return {
+    autoExpandLimit: state.settings.autoExpandLimit,
+    visible: state.settings.visible,
+  }
+}
+
+const mapDispatchToProps = (dispatch: any) => {
+  return {
+    actions: bindActionCreators(settingsActions, dispatch),
+  }
+}
+
+export default withStyles(styles)(connect(mapStateToProps, mapDispatchToProps)(Settings))
diff --git a/app/src/components/Sidebar/Sidebar.tsx b/app/src/components/Sidebar/Sidebar.tsx
index 06b86b9..0439eb9 100644
--- a/app/src/components/Sidebar/Sidebar.tsx
+++ b/app/src/components/Sidebar/Sidebar.tsx
@@ -13,13 +13,13 @@ import { withStyles, Theme, StyleRulesCallback } from '@material-ui/core/styles'
 import Copy from '../Copy'
 
 interface Props {
-  node?: q.TreeNode | undefined,
+  node?: q.TreeNode,
   classes: any,
-  theme: Theme
+  theme: Theme,
 }
 
 interface State {
-  node?: q.TreeNode | undefined
+  node?: q.TreeNode
 }
 
 class Sidebar extends React.Component<Props, State> {
diff --git a/app/src/components/TitleBar.tsx b/app/src/components/TitleBar.tsx
index e6e0899..4ceec07 100644
--- a/app/src/components/TitleBar.tsx
+++ b/app/src/components/TitleBar.tsx
@@ -2,6 +2,22 @@ import * as React from 'react'
 import * as q from '../../../backend/src/Model'
 
 import Search from '@material-ui/icons/Search'
+import Drawer from '@material-ui/core/Drawer'
+import IconButton from '@material-ui/core/IconButton'
+import Menu from '@material-ui/icons/Menu'
+
+import List from '@material-ui/core/List'
+import Divider from '@material-ui/core/Divider'
+import ListItem from '@material-ui/core/ListItem'
+import ListItemIcon from '@material-ui/core/ListItemIcon'
+import ListItemText from '@material-ui/core/ListItemText'
+import Slider from '@material-ui/lab/Slider'
+
+import { settingsActions } from '../actions'
+import { AppState, SettingsModel } from '../reducers'
+
+import { connect } from 'react-redux'
+import { bindActionCreators } from 'redux'
 
 import { AppBar, Toolbar, Typography, InputBase } from '@material-ui/core'
 import { withStyles, StyleRulesCallback } from '@material-ui/core/styles'
@@ -53,17 +69,30 @@ const styles: StyleRulesCallback = theme => ({
       width: 200,
     },
   },
+  menuButton: {
+    marginLeft: -12,
+    marginRight: 20,
+  },
 })
 
 interface Props {
   classes: any
+  actions: any
 }
 
-class TitleBar extends React.Component<Props, {}> {
+interface State {
+  selectedNode?: q.TreeNode
+  settingsVisible: boolean
+  autoExpandLimit: number
+}
+
+class TitleBar extends React.Component<Props, State> {
   constructor(props: any) {
     super(props)
     this.state = {
       selectedNode: undefined,
+      settingsVisible: false,
+      autoExpandLimit: 0,
     }
   }
 
@@ -72,6 +101,9 @@ class TitleBar extends React.Component<Props, {}> {
 
     return <AppBar position="static">
         <Toolbar>
+          <IconButton className={classes.menuButton} color="inherit" aria-label="Menu" onClick={this.props.actions.toggleSettingsVisibility}>
+            <Menu />
+          </IconButton>
           <Typography className={classes.title} variant="h6" color="inherit">MQTT-Xplorer</Typography>
           <div className={classes.search}>
             <div className={classes.searchIcon}>
@@ -90,4 +122,10 @@ class TitleBar extends React.Component<Props, {}> {
   }
 }
 
-export default withStyles(styles)(TitleBar)
+const mapDispatchToProps = (dispatch: any) => {
+  return {
+    actions: bindActionCreators(settingsActions, dispatch),
+  }
+}
+
+export default withStyles(styles)(connect(null, mapDispatchToProps)(TitleBar))
diff --git a/app/src/components/Tree/Tree.tsx b/app/src/components/Tree/Tree.tsx
index 685c166..162c1df 100644
--- a/app/src/components/Tree/Tree.tsx
+++ b/app/src/components/Tree/Tree.tsx
@@ -5,13 +5,16 @@ import { Typography } from '@material-ui/core'
 import { makeConnectionMessageEvent, rendererEvents } from '../../../../events'
 import {  } from '../../../../events/Events'
 const MovingAvaerage = require('moving-average')
+import { connect } from 'react-redux'
+import { AppState } from '../../reducers'
 
 declare const performance: any
 
 const timeInterval = 10 * 1000
 const average = MovingAvaerage(timeInterval)
 
-interface Props{
+interface Props {
+  autoExpandLimit: number
   didSelectNode?: (node: q.TreeNode) => void
   connectionId?: string
 }
@@ -21,7 +24,7 @@ interface TreeState {
   msg: any
 }
 
-export class Tree extends React.Component<Props, TreeState> {
+class Tree extends React.Component<Props, TreeState> {
   private renderDuration: number = 300
   private updateTimer?: any
   private lastUpdate: number = 0
@@ -98,12 +101,13 @@ export class Tree extends React.Component<Props, TreeState> {
 
     return <Typography style={ style }>
         <TreeNode
-          animateChages={true}
-          autoExpandLimit={3000}
-          isRoot={true}
-          didSelectNode={this.props.didSelectNode}
-          treeNode={this.state.tree}
-          name="/" collapsed={false}
+          animateChages = { true }
+          autoExpandLimit = { this.props.autoExpandLimit }
+          isRoot = { true }
+          didSelectNode = { this.props.didSelectNode }
+          treeNode = { this.state.tree }
+          name = "/"
+          collapsed = { false }
           key="rootNode"
           performanceCallback={(ms: number) => {
             average.push(Date.now(), ms)
@@ -113,3 +117,11 @@ export class Tree extends React.Component<Props, TreeState> {
     </Typography>
   }
 }
+
+const mapStateToProps = (state: AppState) => {
+  return {
+    autoExpandLimit: state.settings.autoExpandLimit,
+  }
+}
+
+export default connect(mapStateToProps)(Tree)
diff --git a/app/src/components/Tree/TreeNode.tsx b/app/src/components/Tree/TreeNode.tsx
index bceb07e..a479631 100644
--- a/app/src/components/Tree/TreeNode.tsx
+++ b/app/src/components/Tree/TreeNode.tsx
@@ -1,13 +1,33 @@
 import * as React from 'react'
 import * as q from '../../../../backend/src/Model'
-import { withTheme, Theme } from '@material-ui/core/styles'
+import { withStyles, Theme } from '@material-ui/core/styles'
 import { isElementInViewport } from '../helper/isElementInViewport'
 import TreeNodeTitle from './TreeNodeTitle'
 import TreeNodeSubnodes from './TreeNodeSubnodes'
 
 declare var performance: any
 
-export interface TreeNodeProps {
+const styles = (theme: Theme) => {
+  return {
+    collapsedSubnodes: {
+      color: theme.palette.text.secondary,
+    },
+    displayBlock: {
+      display: 'block',
+    },
+    node: {
+      display: 'block',
+      marginLeft: '10px',
+    },
+    hover: {
+      '&:hover': {
+        backgroundColor: 'rgba(80, 80, 80, 0.35)',
+      },
+    },
+  }
+}
+
+interface Props {
   animateChages: boolean
   isRoot?: boolean
   treeNode: q.TreeNode
@@ -15,20 +35,16 @@ export interface TreeNodeProps {
   collapsed?: boolean | undefined
   performanceCallback?: ((ms: number) => void) | undefined
   didSelectNode?: (node: q.TreeNode) => void
-  theme: Theme
+  classes: any
   autoExpandLimit: number
 }
 
-interface TreeNodeState {
-  title: string | undefined
-  collapsed: boolean
+interface State {
   collapsedOverride: boolean | undefined
-  edgeCount: number
 }
 
-class TreeNode extends React.Component<TreeNodeProps, TreeNodeState> {
+class TreeNode extends React.Component<Props, State> {
   private dirtySubnodes: boolean = true
-  private dirtyState: boolean = true
   private dirtyEdges: boolean = true
   private dirtyMessage: boolean = true
 
@@ -49,11 +65,12 @@ class TreeNode extends React.Component<TreeNodeProps, TreeNodeState> {
     this.dirtyMessage = true
   }
 
-  constructor(props: TreeNodeProps) {
+  constructor(props: Props) {
     super(props)
-    const edgeCount = Object.keys(props.treeNode.edges).length
-    const collapsed = edgeCount > this.props.autoExpandLimit
-    this.state = { collapsed, edgeCount, collapsedOverride: props.collapsed, title: props.name }
+
+    this.state = {
+      collapsedOverride: props.collapsed,
+    }
   }
 
   public componentDidMount() {
@@ -70,32 +87,18 @@ class TreeNode extends React.Component<TreeNodeProps, TreeNodeState> {
     treeNode.onMessage.unsubscribe(this.messageDidChange)
   }
 
-  private getStyles() {
-    return {
-      collapsedSubnodes: {
-        color: this.props.theme.palette.text.secondary,
-      },
-      displayBlock: {
-        display: 'block',
-      },
-    }
+  private stateHasChanged(newState: State) {
+    return this.state.collapsedOverride !== newState.collapsedOverride
   }
 
-  public setState(newState: any) {
-    this.dirtyState = this.stateHasChanged(newState)
-
-    super.setState(newState)
+  private propsHasChanged(newProps: Props) {
+    return this.props.autoExpandLimit !== newProps.autoExpandLimit
   }
 
-  private stateHasChanged(newState: any) {
-    return this.state.collapsed !== newState.collapsed
-      || this.state.collapsedOverride !== newState.collapsedOverride
-      || this.state.edgeCount !== newState.edgeCount
-  }
-
-  public shouldComponentUpdate() {
+  public shouldComponentUpdate(nextProps: Props, nextState: State) {
     const shouldRenderToRemoveCssAnimation = this.cssAnimationWasSetAt !== undefined
-    return this.dirtyState
+    return this.stateHasChanged(nextState)
+      || this.propsHasChanged(nextProps)
       || this.dirtyEdges
       || this.dirtyMessage
       || this.dirtySubnodes
@@ -124,25 +127,26 @@ class TreeNode extends React.Component<TreeNodeProps, TreeNodeState> {
       return this.state.collapsedOverride
     }
 
-    return this.state.collapsed
-  }
-
-  public componentWillReceiveProps() {
-    const edgeCount = Object.keys(this.props.treeNode.edges).length
-    this.setState({ edgeCount, collapsed: edgeCount > this.props.autoExpandLimit })
+    return this.props.treeNode.edgeCount() > this.props.autoExpandLimit
   }
 
   public render() {
-    const { displayBlock } = this.getStyles()
     const animationStyle = this.indicatingChangeAnimationStyle()
+    const { classes } = this.props
+    this.dirtyEdges = this.dirtyMessage = this.dirtySubnodes = false
 
-    this.dirtyState = this.dirtyEdges = this.dirtyMessage = this.dirtySubnodes = false
-
-    return <div key={this.props.treeNode.hash()} style={ { display: 'block', marginLeft: '10px' } }>
+    return <div
+      key={this.props.treeNode.hash()}
+      className={`${classes.node} ${!this.props.isRoot ? classes.hover : ''}`}
+      onClick={(event) => {
+        event.stopPropagation()
+        this.toggle()
+        this.props.didSelectNode && this.props.didSelectNode(this.props.treeNode)
+      }}
+    >
       <span ref={this.titleRef} style={animationStyle}>
         <TreeNodeTitle
           onClick={() => this.toggle()}
-          edgeCount={this.state.edgeCount}
           collapsed={this.collapsed()}
           treeNode={this.props.treeNode}
           name={this.props.name}
@@ -186,4 +190,4 @@ class TreeNode extends React.Component<TreeNodeProps, TreeNodeState> {
   }
 }
 
-export default withTheme()(TreeNode)
+export default withStyles(styles)(TreeNode)
diff --git a/app/src/components/Tree/TreeNodeTitle.tsx b/app/src/components/Tree/TreeNodeTitle.tsx
index 44b3e5e..d16baf9 100644
--- a/app/src/components/Tree/TreeNodeTitle.tsx
+++ b/app/src/components/Tree/TreeNodeTitle.tsx
@@ -1,16 +1,13 @@
 import * as React from 'react'
 import * as q from '../../../../backend/src/Model'
-import { Typography } from '@material-ui/core'
 import { withTheme, Theme } from '@material-ui/core/styles'
 
 export interface TreeNodeProps extends React.HTMLAttributes<HTMLElement> {
   treeNode: q.TreeNode
-  // ref: React.Ref<HTMLElement>
   name?: string | undefined
   collapsed?: boolean | undefined
   toggleCollapsed: () => void
   didSelectNode?: (node: q.TreeNode) => void
-  edgeCount: number
   theme: Theme
 }
 
@@ -81,7 +78,7 @@ class TreeNodeTitle extends React.Component<TreeNodeProps, {}> {
   }
 
   private renderExpander() {
-    if (this.props.edgeCount === 0) {
+    if (this.props.treeNode.edgeCount() === 0) {
       return null
     }
 
@@ -89,7 +86,7 @@ class TreeNodeTitle extends React.Component<TreeNodeProps, {}> {
   }
 
   private renderCollapsedSubnodes() {
-    if (this.props.edgeCount === 0 || !this.props.collapsed) {
+    if (this.props.treeNode.edgeCount() === 0 || !this.props.collapsed) {
       return null
     }
 
diff --git a/app/src/index.tsx b/app/src/index.tsx
index 6c1ee5f..eade86c 100644
--- a/app/src/index.tsx
+++ b/app/src/index.tsx
@@ -1,6 +1,9 @@
 import * as React from 'react'
 import * as ReactDOM from 'react-dom'
 
+import { Provider } from 'react-redux'
+import { createStore } from 'redux'
+import reducers, { AppState } from './reducers'
 import App from './App'
 import { MuiThemeProvider, createMuiTheme } from '@material-ui/core/styles'
 
@@ -12,10 +15,23 @@ const theme = createMuiTheme({
 })
 
 declare var document: any
+declare var window: any
+
+const initialAppState = {
+  settings: {
+    autoExpandLimit: 0,
+    visible: false,
+  },
+}
+
+const store = createStore(reducers, initialAppState)
+window.reduxStore = store
 
 ReactDOM.render(
     <MuiThemeProvider theme={theme}>
-      <App />
+      <Provider store={store}>
+        <App name="" />
+      </Provider>
     </MuiThemeProvider>,
     document.getElementById('example'),
 )
diff --git a/app/src/reducers/index.ts b/app/src/reducers/index.ts
new file mode 100644
index 0000000..1563dee
--- /dev/null
+++ b/app/src/reducers/index.ts
@@ -0,0 +1,50 @@
+import { Reducer, Action } from 'redux'
+
+export enum ActionTypes {
+  setAutoExpandLimit = 'SET_AUTO_EXPAND_LIMIT',
+  toggleSettingsVisibility = 'TOGGLE_SETTINGS_VISIBILITY',
+}
+
+interface SettingsAction extends Action {
+  type: ActionTypes,
+  autoExpandLimit: number
+}
+
+export interface AppState {
+  settings: SettingsModel
+}
+
+export interface SettingsModel {
+  autoExpandLimit: number
+  visible: boolean
+}
+
+const reducer: Reducer<AppState | undefined, SettingsAction> = (state, action) => {
+  if (!state) {
+    throw Error('No initial state')
+  }
+  console.log(action)
+
+  switch (action.type) {
+    case ActionTypes.setAutoExpandLimit:
+      return {
+        ...state,
+        settings: {
+          visible: state.settings.visible,
+          autoExpandLimit: action.autoExpandLimit,
+        },
+      }
+    case ActionTypes.toggleSettingsVisibility:
+      return {
+        ...state,
+        settings: {
+          visible: !state.settings.visible,
+          autoExpandLimit: state.settings.autoExpandLimit,
+        },
+      }
+    default:
+      return state
+  }
+}
+
+export default reducer
diff --git a/backend/package.json b/backend/package.json
index d457a28..5a89ad5 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -34,25 +34,5 @@
     ],
     "sourceMap": true,
     "instrument": true
-  },
-  "dependencies": {
-    "mqtt": "^2.18.8",
-    "sha1": "^1.1.1",
-    "socket.io": "^2.2.0"
-  },
-  "devDependencies": {
-    "@types/chai": "^4.1.7",
-    "@types/mocha": "^5.2.5",
-    "@types/node": "^10.12.18",
-    "@types/sha1": "^1.1.1",
-    "@types/socket.io": "^2.1.2",
-    "chai": "^4.2.0",
-    "mocha": "^5.2.0",
-    "nyc": "^13.1.0",
-    "source-map-support": "^0.5.9",
-    "ts-node": "^7.0.1",
-    "tslint": "^5.12.0",
-    "tslint-strict-null-checks": "^1.0.1",
-    "typescript": "^3.2.2"
   }
 }
diff --git a/backend/src/Model/TreeNode.ts b/backend/src/Model/TreeNode.ts
index 53338ca..36a48df 100644
--- a/backend/src/Model/TreeNode.ts
+++ b/backend/src/Model/TreeNode.ts
@@ -93,6 +93,10 @@ export class TreeNode {
     return this.leafes().length
   }
 
+  public edgeCount(): number {
+    return Object.values(this.edges).length
+  }
+
   public leafes(): TreeNode[] {
     if (this.cachedLeafes === undefined) {
       if (Object.values(this.edges).length === 0) {
diff --git a/build.ts b/build.ts
index d080505..a1f83e0 100644
--- a/build.ts
+++ b/build.ts
@@ -6,7 +6,7 @@ const linux: builder.CliOptions = {
   armv7l: true,
   arm64: true,
   linux: ['snap', 'AppImage', 'deb', 'pacman'],
-  prepackaged: './build/topackage',
+  projectDir: './build/clean',
 }
 
 const win: builder.CliOptions = {
@@ -15,7 +15,7 @@ const win: builder.CliOptions = {
   armv7l: false,
   arm64: false,
   win: ['portable'],
-  prepackaged: './build/topackage',
+  projectDir: './build/clean',
 }
 
 const mac: builder.CliOptions = {
@@ -24,12 +24,13 @@ const mac: builder.CliOptions = {
   armv7l: false,
   arm64: false,
   mac: ['dmg'],
+  projectDir: './build/clean',
 }
 
 async function buildAll() {
-  await builder.build(linux)
+  // await builder.build(linux)
   await builder.build(mac)
-  await builder.build(win)
+  // await builder.build(win)
 }
 
 buildAll()
diff --git a/electron.js b/electron.js
index ad95a6d..a19e616 100644
--- a/electron.js
+++ b/electron.js
@@ -6,6 +6,8 @@ require('./backend/build/backend/src/index.js')
 let mainWindow
 
 function createWindow () {
+  BrowserWindow.addDevToolsExtension ('/Users/thomas/Library/Application Support/Google/Chrome/Default/Extensions/fmkadmapgofadopljbjfkapdkoienihi/3.5.0_0');
+
   // Create the browser window.
   mainWindow = new BrowserWindow({
     width: 1024,
diff --git a/package-lock.json b/package-lock.json
index 99ebfa6..02b1b88 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,6 +10,140 @@
       "integrity": "sha512-AsnBZN3a8/JcNt+KPkGGODaA4c7l3W5+WpeKgGSbstSLxqWtTXqd1ieJGBQ8IFCtRg8DmmKUcSkIkUc0A4p3YA==",
       "dev": true
     },
+    "@babel/code-frame": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
+      "integrity": "sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==",
+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.0.0"
+      }
+    },
+    "@babel/generator": {
+      "version": "7.2.2",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.2.2.tgz",
+      "integrity": "sha512-I4o675J/iS8k+P38dvJ3IBGqObLXyQLTxtrR4u9cSUJOURvafeEWb/pFMOTwtNrmq73mJzyF6ueTbO1BtN0Zeg==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.2.2",
+        "jsesc": "^2.5.1",
+        "lodash": "^4.17.10",
+        "source-map": "^0.5.0",
+        "trim-right": "^1.0.1"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+          "dev": true
+        }
+      }
+    },
+    "@babel/helper-function-name": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.1.0.tgz",
+      "integrity": "sha512-A95XEoCpb3TO+KZzJ4S/5uW5fNe26DjBGqf1o9ucyLyCmi1dXq/B3c8iaWTfBk3VvetUxl16e8tIrd5teOCfGw==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-get-function-arity": "^7.0.0",
+        "@babel/template": "^7.1.0",
+        "@babel/types": "^7.0.0"
+      }
+    },
+    "@babel/helper-get-function-arity": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.0.0.tgz",
+      "integrity": "sha512-r2DbJeg4svYvt3HOS74U4eWKsUAMRH01Z1ds1zx8KNTPtpTL5JAsdFv8BNyOpVqdFhHkkRDIg5B4AsxmkjAlmQ==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.0.0"
+      }
+    },
+    "@babel/helper-split-export-declaration": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.0.0.tgz",
+      "integrity": "sha512-MXkOJqva62dfC0w85mEf/LucPPS/1+04nmmRMPEBUB++hiiThQ2zPtX/mEWQ3mtzCEjIJvPY8nuwxXtQeQwUag==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.0.0"
+      }
+    },
+    "@babel/highlight": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
+      "integrity": "sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.0.0",
+        "esutils": "^2.0.2",
+        "js-tokens": "^4.0.0"
+      },
+      "dependencies": {
+        "js-tokens": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+          "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+          "dev": true
+        }
+      }
+    },
+    "@babel/parser": {
+      "version": "7.2.3",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.2.3.tgz",
+      "integrity": "sha512-0LyEcVlfCoFmci8mXx8A5oIkpkOgyo8dRHtxBnK9RRBwxO2+JZPNsqtVEZQ7mJFPxnXF9lfmU24mHOPI0qnlkA==",
+      "dev": true
+    },
+    "@babel/template": {
+      "version": "7.2.2",
+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.2.2.tgz",
+      "integrity": "sha512-zRL0IMM02AUDwghf5LMSSDEz7sBCO2YnNmpg3uWTZj/v1rcG2BmQUvaGU8GhU8BvfMh1k2KIAYZ7Ji9KXPUg7g==",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "^7.0.0",
+        "@babel/parser": "^7.2.2",
+        "@babel/types": "^7.2.2"
+      }
+    },
+    "@babel/traverse": {
+      "version": "7.2.3",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.2.3.tgz",
+      "integrity": "sha512-Z31oUD/fJvEWVR0lNZtfgvVt512ForCTNKYcJBGbPb1QZfve4WGH8Wsy7+Mev33/45fhP/hwQtvgusNdcCMgSw==",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "^7.0.0",
+        "@babel/generator": "^7.2.2",
+        "@babel/helper-function-name": "^7.1.0",
+        "@babel/helper-split-export-declaration": "^7.0.0",
+        "@babel/parser": "^7.2.3",
+        "@babel/types": "^7.2.2",
+        "debug": "^4.1.0",
+        "globals": "^11.1.0",
+        "lodash": "^4.17.10"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        }
+      }
+    },
+    "@babel/types": {
+      "version": "7.2.2",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.2.2.tgz",
+      "integrity": "sha512-fKCuD6UFUMkR541eDWL+2ih/xFZBXPOg/7EQFeTluMDebfqR4jrpaCjLhkWlQS4hT6nRa2PMEgXKbRB5/H2fpg==",
+      "dev": true,
+      "requires": {
+        "esutils": "^2.0.2",
+        "lodash": "^4.17.10",
+        "to-fast-properties": "^2.0.0"
+      }
+    },
     "@fimbul/bifrost": {
       "version": "0.15.0",
       "resolved": "https://registry.npmjs.org/@fimbul/bifrost/-/bifrost-0.15.0.tgz",
@@ -50,6 +184,12 @@
         "tslib": "^1.8.1"
       }
     },
+    "@types/chai": {
+      "version": "4.1.7",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.1.7.tgz",
+      "integrity": "sha512-2Y8uPt0/jwjhQ6EiluT0XCri1Dbplr0ZxfFXUz+ye13gaqE8u5gL5ppao1JrUYr9cIip5S6MvQzBS7Kke7U9VA==",
+      "dev": true
+    },
     "@types/electron": {
       "version": "1.6.10",
       "resolved": "https://registry.npmjs.org/@types/electron/-/electron-1.6.10.tgz",
@@ -58,10 +198,25 @@
         "electron": "*"
       }
     },
+    "@types/mocha": {
+      "version": "5.2.5",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-5.2.5.tgz",
+      "integrity": "sha512-lAVp+Kj54ui/vLUFxsJTMtWvZraZxum3w3Nwkble2dNuV5VnPA+Mi2oGX9XYJAaIvZi3tn3cbjS/qcJXRb6Bww==",
+      "dev": true
+    },
     "@types/node": {
-      "version": "8.10.39",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.10.39.tgz",
-      "integrity": "sha512-rE7fktr02J8ybFf6eysife+WF+L4sAHWzw09DgdCebEu+qDwMvv4zl6Bc+825ttGZP73kCKxa3dhJOoGJ8+5mA=="
+      "version": "10.12.18",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.12.18.tgz",
+      "integrity": "sha512-fh+pAqt4xRzPfqA6eh3Z2y6fyZavRIumvjhaCL753+TVkGKGhpPeyrJG2JftD0T9q4GF00KjefsQ+PQNDdWQaQ=="
+    },
+    "@types/sha1": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@types/sha1/-/sha1-1.1.1.tgz",
+      "integrity": "sha512-Yrz4TPsm/xaw7c39aTISskNirnRJj2W9OVeHv8ooOR9SG8NHEfh4lwvGeN9euzxDyPfBdFkvL/VHIY3kM45OpQ==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*"
+      }
     },
     "@types/socket.io": {
       "version": "2.1.2",
@@ -245,6 +400,12 @@
       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
+    "assertion-error": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
+      "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
+      "dev": true
+    },
     "async-exit-hook": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/async-exit-hook/-/async-exit-hook-2.0.1.tgz",
@@ -317,8 +478,7 @@
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
     "base64-arraybuffer": {
       "version": "0.1.5",
@@ -352,6 +512,44 @@
         "callsite": "1.0.0"
       }
     },
+    "bl": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
+      "integrity": "sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==",
+      "requires": {
+        "readable-stream": "^2.3.5",
+        "safe-buffer": "^5.1.1"
+      },
+      "dependencies": {
+        "isarray": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
+        },
+        "readable-stream": {
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        },
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+    "tslint-strict-null-checks": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/tslint-strict-null-checks/-/tslint-strict-null-checks-1.0.1.tgz",
+      "integrity": "sha512-W7SzlPqOv7E/UnqrqcbUFXeE5M/YU41GpkHY5nkAyhBW12UJ3Xhh9rLAizw57xFLng4Y400h06udmgDe2cNBCg==",
+      "dev": true
+    },
     "tsutils": {
       "version": "2.29.0",
       "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-2.29.0.tgz",
@@ -2863,6 +4946,12 @@
       "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
       "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
     },
+    "type-detect": {
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
+      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
+      "dev": true
+    },
     "typedarray": {
       "version": "0.0.6",
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
@@ -2874,6 +4963,25 @@
       "integrity": "sha512-VCj5UiSyHBjwfYacmDuc/NOk4QQixbE+Wn7MFJuS0nRuPQbof132Pw4u53dm264O8LPc2MVsc7RJNml5szurkg==",
       "dev": true
     },
+    "ultron": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
+      "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og=="
+    },
+    "unc-path-regex": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
+      "integrity": "sha1-5z3T17DXxe2G+6xrCufYxqadUPo="
+    },
+    "unique-stream": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/unique-stream/-/unique-stream-2.3.1.tgz",
+      "integrity": "sha512-2nY4TnBE70yoxHkDli7DMazpWiP7xMdCYqU2nBRO0UB+ZpEkGsSija7MvmvnZFUeC+mrgiUfcHSr3LmRFIg4+A==",
+      "requires": {
+        "json-stable-stringify-without-jsonify": "^1.0.1",
+        "through2-filter": "^3.0.0"
+      }
+    },
     "unique-string": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unique-string/-/unique-string-1.0.0.tgz",
@@ -2981,6 +5089,63 @@
         "extsprintf": "^1.2.0"
       }
     },
+    "websocket-stream": {
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/websocket-stream/-/websocket-stream-5.1.2.tgz",
+      "integrity": "sha512-lchLOk435iDWs0jNuL+hiU14i3ERSrMA0IKSiJh7z6X/i4XNsutBZrtqu2CPOZuA4G/zabiqVAos0vW+S7GEVw==",
+      "requires": {
+        "duplexify": "^3.5.1",
+        "inherits": "^2.0.1",
+        "readable-stream": "^2.3.3",
+        "safe-buffer": "^5.1.1",
+        "ws": "^3.2.0",
+        "xtend": "^4.0.0"
+      },
+      "dependencies": {
+        "isarray": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
+        },
+        "readable-stream": {
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        },
+        "string_decoder": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+          "requires": {
+            "safe-buffer": "~5.1.0"
+          }
+        },
+        "ws": {
+          "version": "3.3.3",
+          "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.3.tgz",
+          "integrity": "sha512-nnWLa/NwZSt4KQJu51MYlCcSQ5g7INpOrOMt4XV8j4dqTXdmlUmSHQ8/oLC069ckre0fRsgfvsKwbTdtKLCDkA==",
+          "requires": {
+            "async-limiter": "~1.0.0",
+            "safe-buffer": "~5.1.0",
+            "ultron": "~1.1.0"
+          }
+        },
+        "xtend": {
+          "version": "4.0.1",
+          "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+          "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
+        }
+      }
+    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -3051,8 +5216,7 @@
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "write-file-atomic": {
       "version": "2.3.0",
diff --git a/package.json b/package.json
index 28c0f47..9f5f75c 100644
--- a/package.json
+++ b/package.json
@@ -11,9 +11,14 @@
     "release": "npm run test && ./release.sh"
   },
   "build": {
-    "appId": "mq-explorer",
+    "appId": "mqtt-explorer",
     "mac": {
-      "category": "de.t7n.apps.mq-explorer"
+      "category": "de.t7n.apps.mq-explorer",
+      "files": [
+        "**/*",
+        "!**/*.ts",
+        "!app/node_modules"
+      ]
     },
     "linux": {
       "category": "Development",
@@ -36,11 +41,23 @@
     "tslint": "^5.12.0",
     "tslint-config-airbnb": "^5.11.1",
     "tslint-react": "^3.6.0",
-    "typescript": "^3.2.2"
+    "typescript": "^3.2.2",
+    "@types/chai": "^4.1.7",
+    "@types/mocha": "^5.2.5",
+    "@types/node": "^10.12.18",
+    "@types/sha1": "^1.1.1",
+    "@types/socket.io": "^2.1.2",
+    "chai": "^4.2.0",
+    "mocha": "^5.2.0",
+    "nyc": "^13.1.0",
+    "source-map-support": "^0.5.9",
+    "tslint-strict-null-checks": "^1.0.1"
   },
   "dependencies": {
     "@types/electron": "^1.6.10",
     "@types/socket.io": "^2.1.2",
-    "socket.io": "^2.2.0"
+    "socket.io": "^2.2.0",
+    "mqtt": "^2.18.8",
+    "sha1": "^1.1.1"
   }
 }
diff --git a/release.sh b/release.sh
index 9324d54..eac674a 100755
--- a/release.sh
+++ b/release.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-DIR=build/topackage
+DIR=build/clean
 
 rm -rf "$DIR"
 mkdir -p "$DIR"
@@ -14,6 +14,8 @@ npm run build
 rm -rf app/node_modules
 cd "$ORIGINAL_DIR"
 
+node_modules/.bin/ts-node build.ts
+exit 0
 docker run --rm -ti \
  --env ELECTRON_CACHE="/root/.cache/electron" \
  --env ELECTRON_BUILDER_CACHE="/root/.cache/electron-builder" \