collabdraw

Collabdraw HTML5 collaborative whiteboard for tablets

Collabdraw is an open-source online whiteboard application built to work on desktops and tablets alike. The user interface is HTML5 (using enyojs), and the backend runs on python tornado and redis. (more…)

FREE

Collaboration made easy through TogetherJS
TogetherJS is a free, open source JavaScript library by Mozilla that adds collaboration features and tools to your website. By adding TogetherJS to your site, your users can help each other out on a website in real time! (more…)
togetherjs.com
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Transform your 2D designs into glossy 3D mockups in seconds using Photoshop.