
Description: FreePBX is an open source web-based GUI that controls and manages Asterisk, an open source communication server. It enables managing extensions, voicemail, call routing, IVRs, and other PBX features through a web browser.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Thirdlane is a cloud-based business phone system that provides call routing, auto attendants, voicemail, call recording, SMS, and other features for small to mid-sized businesses. It works with desk phones and mobile apps.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API