diff --git a/src/css/cloud-ui.css b/src/css/cloud-ui.css
new file mode 100644
index 000000000..b6f941fca
--- /dev/null
+++ b/src/css/cloud-ui.css
@@ -0,0 +1,87 @@
+#cloudWidget {
+    background: url("../img/cloud.png") hsl(216, 100%, 93%);
+    border-radius: 3px;
+    margin: 0.5em 0;
+    padding: 1em;
+    position: relative;
+    }
+#cloudWidget.hide {
+    display: none;
+    }
+#cloudWidget > button {
+    font-size: 160%;
+    padding: 0.1em 0.2em;
+    }
+#cloudPull[disabled] {
+    visibility: hidden;
+    }
+body[dir="ltr"] #cloudPush:after ,
+body[dir="ltr"] #cloudPull:before {
+    font-family: FontAwesome;
+    font-style: normal;
+    font-weight: normal;
+    line-height: 1;
+    vertical-align: baseline;
+    display: inline-block;
+    }
+body[dir="ltr"] #cloudPush:after {
+    content: '\f0ee';
+    }
+body[dir="rtl"] #cloudPush:after {
+    content: '\f0ee';
+    }
+body[dir="ltr"] #cloudPull:before {
+    content: '\f0ed';
+    }
+body[dir="rtl"] #cloudPull:before {
+    content: '\f0ed';
+    }
+#cloudWidget > span {
+    color: gray;
+    display: inline-block;
+    font-size: 90%;
+    margin: 0 1em;
+    padding: 0;
+    vertical-align: bottom;
+    white-space: pre;
+    }
+#cloudWidget > .nodata {
+    }
+#cloudWidget > #cloudCog {
+    cursor: pointer;
+    display: inline-block;
+    font-size: 110%;
+    margin: 0;
+    opacity: 0.5;
+    padding: 4px;
+    position: absolute;
+    right: 0;
+    top: 0;
+    }
+#cloudWidget > #cloudCog:hover {
+    opacity: 1;
+    }
+#cloudWidget > #cloudOptions {
+    align-items: center;
+    -webkit-align-items: center;
+    background-color: rgba(0, 0, 0, 0.75);
+    bottom: 0;
+    display: none;
+    justify-content: center;
+    -webkit-justify-content: center;
+    left: 0;
+    position: fixed;
+    right: 0;
+    top: 0;
+    z-index: 2000;
+    }
+#cloudWidget > #cloudOptions.show {
+    display: flex;
+    display: -webkit-flex;
+    }
+#cloudWidget > #cloudOptions > div {
+    background-color: white;
+    border-radius: 3px;
+    padding: 1em;
+    text-align: center;
+    }
diff --git a/src/img/cloud.png b/src/img/cloud.png
new file mode 100644
index 000000000..6c78dde2e
Binary files /dev/null and b/src/img/cloud.png differ
diff --git a/src/js/cloud-ui.js b/src/js/cloud-ui.js
new file mode 100644
index 000000000..9bca1fbcf
--- /dev/null
+++ b/src/js/cloud-ui.js
@@ -0,0 +1,199 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2015 Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+/* global uDom */
+'use strict';
+
+/******************************************************************************/
+
+(function() {
+
+/******************************************************************************/
+
+self.cloud = {
+    options: {},
+    datakey: '',
+    data: undefined,
+    onPush: null,
+    onPull: null
+};
+
+/******************************************************************************/
+
+var widget = uDom.nodeFromId('cloudWidget');
+if ( widget === null ) {
+    return;
+}
+
+self.cloud.datakey = widget.getAttribute('data-cloud-entry') || '';
+if ( self.cloud.datakey === '' ) {
+    return;
+}
+
+/******************************************************************************/
+
+var messager = vAPI.messaging.channel('cloud-ui.js');
+
+/******************************************************************************/
+
+var onCloudDataReceived = function(entry) {
+    if ( typeof entry !== 'object' || entry === null ) {
+        return;
+    }
+
+    self.cloud.data = entry.data;
+
+    uDom.nodeFromId('cloudPull').removeAttribute('disabled');
+
+    var timeOptions = {
+        weekday: 'short',
+        year: 'numeric',
+        month: 'short',
+        day: 'numeric',
+        hour: 'numeric',
+        minute: 'numeric',
+        second: 'numeric',
+        timeZoneName: 'short'
+    };
+
+    var time = new Date(entry.tstamp);
+    widget.querySelector('span').textContent =
+        entry.source + '\n' +
+        time.toLocaleString('fullwide', timeOptions);
+};
+
+/******************************************************************************/
+
+var fetchCloudData = function() {
+    messager.send(
+        {
+            what: 'cloudPull',
+            datakey: self.cloud.datakey
+        },
+        onCloudDataReceived
+    );
+};
+
+/******************************************************************************/
+
+var pushData = function() {
+    if ( typeof self.cloud.onPush !== 'function' ) {
+        return;
+    }
+    messager.send(
+        {
+            what: 'cloudPush',
+            datakey: self.cloud.datakey,
+            data: self.cloud.onPush()
+        },
+        fetchCloudData
+    );
+};
+
+/******************************************************************************/
+
+var pullData = function() {
+    if ( typeof self.cloud.onPull === 'function' ) {
+        self.cloud.onPull(self.cloud.data);
+    }
+};
+
+/******************************************************************************/
+
+var openOptions = function() {
+    var input = uDom.nodeFromId('cloudDeviceName');
+    input.value = self.cloud.options.deviceName;
+    input.setAttribute('placeholder', self.cloud.options.defaultDeviceName);
+    uDom.nodeFromId('cloudOptions').classList.add('show');
+};
+
+/******************************************************************************/
+
+var closeOptions = function(ev) {
+    var root = uDom.nodeFromId('cloudOptions');
+    if ( ev.target !== root ) {
+        return;
+    }
+    root.classList.remove('show');
+};
+
+/******************************************************************************/
+
+var submitOptions = function() {
+    var onOptions = function(options) {
+        if ( typeof options !== 'object' || options === null ) {
+            return;
+        }
+        self.cloud.options = options;
+    };
+
+    messager.send({
+        what: 'cloudSetOptions',
+        options: {
+            deviceName: uDom.nodeFromId('cloudDeviceName').value
+        }
+    }, onOptions);
+    uDom.nodeFromId('cloudOptions').classList.remove('show');
+};
+
+/******************************************************************************/
+
+var onInitialize = function(options) {
+    if ( typeof options !== 'object' || options === null ) {
+        return;
+    }
+
+    if ( !options.enabled ) {
+        return;
+    }
+    self.cloud.options = options;
+
+    fetchCloudData();
+
+    var html = [
+        '<button id="cloudPush" type="button" title="cloudPush"></button>',
+        '<span data-i18n="cloudNoData"></span>',
+        '<button id="cloudPull" type="button" title="cloudPull" disabled></button>',
+        '<span id="cloudCog" class="fa">&#xf013;</span>',
+        '<div id="cloudOptions">',
+        '    <div>',
+        '        <p><label data-i18n="cloudDeviceNamePrompt"></label> <input id="cloudDeviceName" type="text" value="">',
+        '        <p><button id="cloudOptionsSubmit" type="button" data-i18n="genericSubmit"></button>',
+        '    </div>',
+        '</div>',
+    ].join('');
+
+    vAPI.insertHTML(widget, html);
+    vAPI.i18n.render(widget);
+    widget.classList.remove('hide');
+
+    uDom('#cloudPush').on('click', pushData);
+    uDom('#cloudPull').on('click', pullData);
+    uDom('#cloudCog').on('click', openOptions);
+    uDom('#cloudOptions').on('click', closeOptions);
+    uDom('#cloudOptionsSubmit').on('click', submitOptions);
+};
+
+messager.send({ what: 'cloudGetOptions' }, onInitialize);
+
+/******************************************************************************/
+
+})();