Open Source @IFTTT - A collection of IFTTT OSS projects.
SmallDevTools - Handy developer tools with a delightful interface
Code NASA - 253 NASA open source software projects
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Google Open Source - All of Googles open source projects under a single umbrella
TextLab - TextLab is the fastest way to format, prettify, transform, hash, encode, and decode your data instantly!