TestFlight - iOS beta testing on the fly.
DeployGate - DeployGate enables developers to distribute beta apps to enable beta testing from fellow developers and community.
TestFairy - Painless Beta Testing
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.
Visual Studio App Center - Continuous everything – build, test, deploy, engage, repeat
pCloudy - pCloudy is the most powerful cloud based App Testing Platform.