Mochi - Write notes and flashcards with Markdown and study them with spaced repetition.
Zeplin - Collaboration app for UI designers & frontend developers
Gainful.io - Capture B2B leads on AngelList, CrunchBase and LinkedIn
Mightytext - Send & Receive SMS Text Messages from your computer. Sync'd with your Android #
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.
ActiveWords - Auto correct on steroids