Mochi - Write notes and flashcards with Markdown and study them with spaced repetition.
Gainful.io - Capture B2B leads on AngelList, CrunchBase and LinkedIn
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.
Yak Tack - remember. words.
Learn Cycle - Write, learn things, and memorise with spaced repetition
Harken - Flashcard app using smart repetition to improve your memory