
Description: OneSignal is a push notification service that allows developers to easily send notifications to users of mobile apps and websites. It provides SDKs for all major platforms and has a straightforward dashboard for sending messages.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Appgain is an app store optimization platform that helps mobile app developers and publishers increase app downloads and revenue. It provides tools to track rankings, monitor keywords, run A/B tests, manage ad campaigns, and gain user insights.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API