diff --git a/.babelrc b/.babelrc
index 2e236249..3e9bd38e 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,4 +1,9 @@
 {
-  "plugins": ["transform-object-rest-spread"],
-  "presets": ["es2015", "react"]
+    "plugins": [
+        "transform-object-rest-spread",
+        ["react-intl", {
+            "messagesDir": "./translations/messages/"
+        }]
+    ],
+    "presets": ["es2015", "react"],
 }
diff --git a/.eslintignore b/.eslintignore
index fe1b4898..217e2872 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,3 +1,4 @@
 node_modules/*
 dist/*
 playground/
+scripts/*
diff --git a/.gitignore b/.gitignore
index 1b3b3bf7..c6c5feec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,7 @@ dist/*
 # Editors
 /#*
 *~
+
+# generated translation files
+/translations
+/locale
diff --git a/package.json b/package.json
index ba1ba054..1d7fd76a 100644
--- a/package.json
+++ b/package.json
@@ -4,11 +4,13 @@
   "description": "Graphical User Interface for the Scratch 3.0 paint editor, which is used to make and edit sprites for use in projects.",
   "main": "./dist/scratch-paint.js",
   "scripts": {
-    "build": "npm run clean && webpack --progress --colors --bail",
+    "build": "npm run clean && npm run i18n:msgs && webpack --progress --colors --bail",
     "clean": "rimraf ./dist && mkdirp dist && rimraf ./playground && mkdirp playground",
     "deploy": "touch playground/.nojekyll && gh-pages -t -d playground -m \"Build for $(git log --pretty=format:%H -n1)\"",
+    "i18n:msgs": "node ./scripts/generate-locale-messages.js",
+    "i18n:src": "babel src > tmp.js && rimraf tmp.js && ./scripts/build-i18n-source.js ./translations/messages/ ./translations/",
     "lint": "eslint . --ext .js,.jsx",
-    "start": "webpack-dev-server",
+    "start": "npm run i18n:msgs && webpack-dev-server",
     "test": "npm run lint && npm run build && npm run unit",
     "unit": "jest",
     "watch": "webpack --progress --colors --watch"
@@ -26,10 +28,12 @@
   },
   "devDependencies": {
     "autoprefixer": "7.1.1",
+    "babel-cli": "6.24.1",
     "babel-core": "^6.23.1",
     "babel-eslint": "^7.1.1",
     "babel-jest": "^20.0.3",
     "babel-loader": "^7.0.0",
+    "babel-plugin-react-intl": "2.3.1",
     "babel-plugin-transform-object-rest-spread": "^6.22.0",
     "babel-preset-es2015": "^6.22.0",
     "babel-preset-react": "^6.22.0",
@@ -57,6 +61,7 @@
     "react": "15.6.1",
     "react-dom": "15.5.4",
     "react-intl": "2.3.0",
+    "react-intl-redux": "0.6.0",
     "react-redux": "5.0.5",
     "react-test-renderer": "^15.5.4",
     "redux": "3.6.0",
diff --git a/scripts/build-i18n-source.js b/scripts/build-i18n-source.js
new file mode 100755
index 00000000..9f6571c1
--- /dev/null
+++ b/scripts/build-i18n-source.js
@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const glob = require('glob');
+const path = require('path');
+const mkdirp = require('mkdirp');
+
+var args = process.argv.slice(2);
+
+if (!args.length) {
+    process.stdout.write('You must specify the messages dir generated by babel-plugin-react-intl.\n');
+    process.exit(1);
+}
+
+const MESSAGES_PATTERN = args.shift() + '/**/*.json';
+
+if (!args.length) {
+    process.stdout.write('A destination directory must be specified.\n');
+    process.exit(1);
+}
+
+const LANG_DIR = args.shift();
+
+// Aggregates the default messages that were extracted from the example app's
+// React components via the React Intl Babel plugin. An error will be thrown if
+// there are messages in different components that use the same `id`. The result
+// is a chromei18n format collection of `id: {message: defaultMessage,
+// description: description}` pairs for the app's default locale.
+let defaultMessages = glob.sync(MESSAGES_PATTERN)
+    .map((filename) => fs.readFileSync(filename, 'utf8'))
+    .map((file) => JSON.parse(file))
+    .reduce((collection, descriptors) => {
+        descriptors.forEach(({id, defaultMessage, description}) => {
+            if (collection.hasOwnProperty(id)) {
+                throw new Error(`Duplicate message id: ${id}`);
+            }
+
+            collection[id] = {message: defaultMessage, description: description};
+        });
+
+        return collection;
+    }, {});
+
+mkdirp.sync(LANG_DIR);
+fs.writeFileSync(path.join(LANG_DIR, 'en.json'), JSON.stringify(defaultMessages, null, 2));
diff --git a/scripts/generate-locale-messages.js b/scripts/generate-locale-messages.js
new file mode 100755
index 00000000..44a1c581
--- /dev/null
+++ b/scripts/generate-locale-messages.js
@@ -0,0 +1,67 @@
+#!/usr/bin/env node
+
+/*
+Generates locale/messages.json from current translastion files
+
+Translations are expected to be in the ./translations directory.
+Translation files are in Chrome i18n json format:
+'''
+{
+    "message.id": {
+        "message": "The translated text",
+        "description": "Tips for translators"
+    },
+    ...
+}
+'''
+They are named by locale, for example: 'fr.json' or 'zh-cn.json'
+
+Current languages supported are listed in ../src/languages.json
+
+Converts the collection of translation files to a single set of messages.
+Example output:
+'''
+{
+  "en": {
+    "action.addBackdrop": "Add Backdrop",
+    "action.addCostume": "Add Costume",
+    "action.recordSound": "Record Sound",
+    "action.addSound": "Add Sound"
+  },
+  "fr": {
+    "action.addSound": "Ajouter Son",
+    "action.addCostume": "Ajouter Costume",
+    "action.addBackdrop": "Ajouter Arrière-plan",
+    "action.recordSound": "Enregistrement du Son"
+  }
+}
+'''
+
+Missing locales are ignored, react-intl will use the default messages for them.
+ */
+const fs = require('fs');
+const path = require('path');
+const mkdirp = require('mkdirp');
+
+const locales = ['en'];
+const LANG_DIR = './translations/';
+const MSGS_DIR = './locale/';
+
+let messages = locales.reduce((collection, lang) => {
+    let langMessages = {};
+    try {
+        let langData = JSON.parse(
+            fs.readFileSync(path.resolve(LANG_DIR, lang + '.json'), 'utf8')
+        );
+        Object.keys(langData).forEach((id) => {
+            langMessages[id] = langData[id].message;
+        });
+        collection[lang] = langMessages;
+    } catch (e) {
+        process.stdout.write(lang + ' translation file missing, will use defaults.\n');
+    }
+    return collection;
+}, {});
+
+mkdirp.sync(MSGS_DIR);
+fs.writeFileSync(MSGS_DIR + 'messages.json', JSON.stringify(messages, null, 2));
diff --git a/src/components/brush-mode.jsx b/src/components/brush-mode.jsx
index 865c04f4..84a831dd 100644
--- a/src/components/brush-mode.jsx
+++ b/src/components/brush-mode.jsx
@@ -1,8 +1,15 @@
 import React from 'react';
 import PropTypes from 'prop-types';
+import {FormattedMessage} from 'react-intl';
 
 const BrushModeComponent = props => (
-    <button onClick={props.onMouseDown}>Brush</button>
+    <button onClick={props.onMouseDown}>
+        <FormattedMessage
+            defaultMessage="Brush"
+            description="Label for the brush tool"
+            id="paint.brushMode.brush"
+        />
+    </button>
 );
 
 BrushModeComponent.propTypes = {
diff --git a/src/containers/brush-mode.jsx b/src/containers/brush-mode.jsx
index 44c6a90e..e751030f 100644
--- a/src/containers/brush-mode.jsx
+++ b/src/containers/brush-mode.jsx
@@ -74,8 +74,8 @@ BrushMode.propTypes = {
 };
 
 const mapStateToProps = state => ({
-    brushModeState: state.brushMode,
-    isBrushModeActive: state.mode === Modes.BRUSH
+    brushModeState: state.scratchPaint.brushMode,
+    isBrushModeActive: state.scratchPaint.mode === Modes.BRUSH
 });
 const mapDispatchToProps = dispatch => ({
     changeBrushSize: brushSize => {
diff --git a/src/containers/eraser-mode.jsx b/src/containers/eraser-mode.jsx
index c8ad4a3b..af932329 100644
--- a/src/containers/eraser-mode.jsx
+++ b/src/containers/eraser-mode.jsx
@@ -70,8 +70,8 @@ EraserMode.propTypes = {
 };
 
 const mapStateToProps = state => ({
-    eraserModeState: state.eraserMode,
-    isEraserModeActive: state.mode === Modes.ERASER
+    eraserModeState: state.scratchPaint.eraserMode,
+    isEraserModeActive: state.scratchPaint.mode === Modes.ERASER
 });
 const mapDispatchToProps = dispatch => ({
     changeBrushSize: brushSize => {
diff --git a/src/index.js b/src/index.js
index 6611b719..b7d91a70 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,3 +1,7 @@
 import PaintEditor from './containers/paint-editor.jsx';
+import ScratchPaintReducer from './reducers/scratch-paint-reducer';
 
-export default PaintEditor;
+export {
+    PaintEditor as default,
+    ScratchPaintReducer
+};
diff --git a/src/locale.js b/src/locale.js
new file mode 100644
index 00000000..fb1e72e9
--- /dev/null
+++ b/src/locale.js
@@ -0,0 +1,11 @@
+import localeDataEn from 'react-intl/locale-data/en';
+
+import messages from '../locale/messages.json'; // eslint-disable-line import/no-unresolved
+
+export default {
+    en: {
+        name: 'English',
+        localeData: localeDataEn,
+        messages: messages.en
+    }
+};
diff --git a/src/playground/playground.jsx b/src/playground/playground.jsx
index 8a27161e..9f68704a 100644
--- a/src/playground/playground.jsx
+++ b/src/playground/playground.jsx
@@ -3,16 +3,20 @@ import ReactDOM from 'react-dom';
 import PaintEditor from '..';
 import {Provider} from 'react-redux';
 import {createStore} from 'redux';
-import reducer from '../reducers/combine-reducers';
+import reducer from './reducers/combine-reducers';
+import {intlInitialState, IntlProvider} from './reducers/intl.js';
 
 const appTarget = document.createElement('div');
 document.body.appendChild(appTarget);
 const store = createStore(
     reducer,
+    intlInitialState,
     window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__()
 );
 ReactDOM.render((
     <Provider store={store}>
-        <PaintEditor />
+        <IntlProvider>
+            <PaintEditor />
+        </IntlProvider>
     </Provider>
 ), appTarget);
diff --git a/src/playground/reducers/combine-reducers.js b/src/playground/reducers/combine-reducers.js
new file mode 100644
index 00000000..e3182b5e
--- /dev/null
+++ b/src/playground/reducers/combine-reducers.js
@@ -0,0 +1,8 @@
+import {combineReducers} from 'redux';
+import intlReducer from './intl';
+import {ScratchPaintReducer} from '../..';
+
+export default combineReducers({
+    intl: intlReducer,
+    scratchPaint: ScratchPaintReducer
+});
diff --git a/src/playground/reducers/intl.js b/src/playground/reducers/intl.js
new file mode 100644
index 00000000..a9d43eda
--- /dev/null
+++ b/src/playground/reducers/intl.js
@@ -0,0 +1,30 @@
+import {addLocaleData} from 'react-intl';
+import {updateIntl as superUpdateIntl} from 'react-intl-redux';
+import {IntlProvider, intlReducer} from 'react-intl-redux';
+
+import locales from '../../locale.js';
+
+Object.keys(locales).forEach(locale => {
+    // TODO: will need to handle locales not in the default intl - see www/custom-locales
+    addLocaleData(locales[locale].localeData);
+});
+
+const intlInitialState = {
+    intl: {
+        defaultLocale: 'en',
+        locale: 'en',
+        messages: locales.en.messages
+    }
+};
+
+const updateIntl = locale => superUpdateIntl({
+    locale: locale,
+    messages: locales[locale].messages || locales.en.messages
+});
+
+export {
+    intlReducer as default,
+    IntlProvider,
+    intlInitialState,
+    updateIntl
+};
diff --git a/src/reducers/combine-reducers.js b/src/reducers/scratch-paint-reducer.js
similarity index 100%
rename from src/reducers/combine-reducers.js
rename to src/reducers/scratch-paint-reducer.js