What are some alternatives?
HockeyApp - Manage your betas and collect live crash reports for iOS, Android, Windows Phone, and OS X apps.
MobiLock Pro - Powerful Android & iOS Mobile Device Management (MDM), Enterprise Mobility Management (EMM) & Kiosk Lockdown App for corporate-owned mobile, tablets & rugged devices.
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.
Cisco Meraki Systems Manager - Cisco Meraki Systems Manager offers cloud-based mobility management solutions.
Shuttle.tools - Distribute and manage your mobile apps, all from one place. For Both iOS & Android.
BlackBerry Unified Endpoint Manager - enables a consistent approach to endpoint management across all major OS platforms: iOS, Android™, Windows® 10 and macOS