1. PilotPilot — multifunction JavaScript router.
2. React SpyA set of utilities for collecting UX-analytics of your React-application (ex: clicks, shows, errors and etc.)
3. Jquery.fileapijQuery.FileAPI — jquery plugin for FileAPI (multiupload, image upload, crop, resize and etc.)
4. PlyAmazing layer/modal/dialog system. Wow!
5. WormholeWormhole — it's better EventEmitter for communication between tabs with supporting Master/Slave.