
Description: Sonic Visualiser is a free, open-source software application for viewing and analyzing the contents of audio files. It allows users to visualize audio waveforms, add annotations, explore spectrograms, and apply audio effects.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Praat is a free computer software package for the scientific analysis of speech and other sounds. It is designed to be a flexible, general-purpose tool for a wide range of acoustic analysis tasks.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API