
Description: SDR# is a free and open-source software package that turns a computer's radio into a software-defined radio receiver. It supports many popular software-defined radios and can receive and demodulate a variety of signals like FM radio, police radio, pager signals, and aircraft transmissions.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: GNU Radio is a free and open-source software development toolkit that provides signal processing blocks to implement software-defined radios and signal processing systems. It can be used for rapid prototyping, experimentation, and education.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API