
Description: Pusher is a hosted API that allows you to add realtime functionality to web and mobile applications. It makes it easy to build features like notifications, messaging, live updates, collaborations tools, and more. Pusher handles all the complex functionality like scaling, security, and reliability behind an easy-to-use API.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Butterfly Server .NET is an open-source .NET server software designed for building real-time web applications. It provides APIs and components for enabling features like bidirectional communication, push notifications, and messaging in web apps.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API