
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Baudline is a free and open source digital signal analyzer and spectrum analyzer software for Linux, Mac, and Windows. It plots realtime frequency, spectrum, spectrogram, signal scope, and persistence graphs for capturing and analyzing audio signals.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API