google-mobwrite : MobWrite converts forms and web applications into collaborative environments. Create a simple single-user system, add one line of JavaScript, and inst...
Cufón : Cufón aims to become a worthy alternative to sIFR, which despite its merits still remains painfully tricky to set up and use.
Kickstrap : Twitter's Bootstrap with themes, apps, and other enhancements
Photon : UI toolkit for building desktop apps with Electron.