SmallDevTools - Handy developer tools with a delightful interface
Student Kit - Everything a student needs.
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
NoteBear - Buy and sell class notes and get on-demand tutoring.
TextLab - TextLab is the fastest way to format, prettify, transform, hash, encode, and decode your data instantly!
Uniyo - Campus communication for students