TestFlight - iOS beta testing on the fly.
AppHost - Free iOS and Android (IPA and APK) app hosting for enterprise and internal mobile apps.
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.
Appaloosa-Store - Appaloosa helps businesses maximize the deployment of enterprise mobile apps. Deploy your enterprise app store for Apple iOS and Android apps to employees & testers.
TestFairy - Painless Beta Testing
PactSafe - PactSafe offers a contract management application that enables clients to manage, track, implement, and deploy website legal agreements.