Codefield - Tools for developers, designers and photographers
ofCourseBooks - Let your students write, save and share their course notes.
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Teech - 24/7 Unlimited help from the world's best students
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
GitHub Student Developer Pack - The best developer tools, free for students.