RemoteQuiz - Play quizzes with your friends on video calls.
Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
iGotNext - Find a new friend to play the games you love — in real time!
Userbrain - Easy, fast, and affordable user testing for websites and prototypes.
Guilded - Find, manage, and challenge gaming teams
UserTest.io - User testing made simple. High-quality, affordable user testing solutions from real users, here in the UK. Improve your usability!