
Description: RebTel is an open-source alternative to Skype focused on privacy and security. It offers encrypted messaging, audio/video calls, screen sharing, and other communication tools.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: mytello is a cloud-based phone system designed for small businesses. It provides a full-featured business phone service, including call routing, IVR menus, call recording, and more. mytello aims to make business phone systems easy to set up and use for SMBs.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API