
Description: Cassini is an open-source .NET emulator that allows developers to run .NET applications on non-Windows platforms like Linux and macOS. It provides a compatibility layer and runtime environment to execute CLI assemblies without needing Windows.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Surge Synthesizer is a free, open-source digital synthesizer plugin for music production. It features multiple wavetable, analog, and hybrid synth engines with effects, modulation options, an arpeggiator, and more for crafting sounds.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API