
Description: Spek is an open-source audio spectrum analyzer software for Windows, Mac and Linux. It allows analyzing and visualizing audio in real-time with a fast Fourier transform. Useful for checking audio quality, finding issues, and general audio analysis.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: TwistedWave is a free online audio editor that allows you to record, edit, and export audio files. It has basic editing features like cut, copy, paste, and provides effects like amplify, normalize, fade in/out.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API