LeadFuze - B2B Lead Generation & Sales Prospecting Software.
memordo - Spaced repetition tool to help you retain more knowledge
Gainful.io - Capture B2B leads on AngelList, CrunchBase and LinkedIn
Harken - Flashcard app using smart repetition to improve your memory
Mitch - The unofficial mobile app for itch.io
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.