
Description: Signal is a free, open source, encrypted messaging and voice calling app. It offers end-to-end encryption for secure communication. With Signal, users can send encrypted messages, make voice and video calls, and share media with individuals or groups.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: TeamTalk.io is a free online collaboration software for teams. It facilitates chat, voice and video conferencing, screen sharing, and file sharing. It is similar to Zoom, Slack, and Google Meet, providing virtual team meeting rooms and workspaces for improved productivity and connection.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API