Beta Family - 50,000 testers to test your app
Postman - The Collaboration Platform for API Development
Erli Bird - For developers & testers alik
Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
TestFlight - iOS beta testing on the fly.
TestComplete - TestComplete Desktop, Web, and Mobile helps you create repeatable and accurate automated tests across multiple devices, platforms, and environments easily and quickly.