* http://sourcetalk.net/ - Code discussion tool, free for open code talks.
* http://vipaar.com/ - Help over video with augmented reality. Free without analytics, encryption, support.
* https://evernote.com/ - Tool for organizing information. Share your notes and work together with others.
* https://www.wunderlist.com/ - Share your lists and work collaboratively on projects with your colleagues - Available for free to download and use on iPhone,iPad,Mac,Android,Windows and the Web.