Bookicious - Find the best new book to read with books collections for makers, founders and entrepreneurs.
BeneTalk - Speech coach for people who stutter by people who stutter
Goodreads - See what your friends are reading.
LingRoom.pl - Tutoring marketplace LingRoom pairs students with private tutors, either locally in-person or online via Skype. Find your best tutor.
Bookcelerator - A curated directory of books that will make you smarter
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.