SmallDevTools - Handy developer tools with a delightful interface
Teech - 24/7 Unlimited help from the world's best students
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Student Kit - Everything a student needs.
Profitable developer tools database - A database of 103+ hand-curated profitable developer tools
ofCourseBooks - Let your students write, save and share their course notes.