
Description: BlackHole is a virtual audio driver for macOS that allows applications to pass audio to other applications with zero latency. It's useful for routing audio between music apps, streaming audio, or using audio apps without sound cards.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Synchronous Audio Router (SAR) is a Windows audio routing tool that allows users to easily manage audio streams between different applications. It provides an intuitive interface to connect audio devices, apps, and inputs/outputs.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API