TestApp.io - A platform that helps both mobile app developers and owners to easily share their apps with everyone to get feedback before reaching publicly to Google and App stores.
TestFlight - iOS beta testing on the fly.
Boombox.io - iOS devs rejoice! Embeddable HTML and hosted TestFlight beta sign-up forms.
Beta Family - 50,000 testers to test your app
Visual Studio App Center - Continuous everything – build, test, deploy, engage, repeat
Install On Air - Install On Air offers Testflight and Diawi Alternative for iOS and Android App. Distribute your application in less time with best platform for app distribution.