
Description: Voxer is a walkie talkie app that works over cellular data or WiFi. It allows real-time voice communication, as well as the ability to send pre-recorded audio messages. Key features include end-to-end encryption, group messaging with up to 200 people, and integration with other apps like Zello and JioChat.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Marco Polo is a video messaging app that allows users to send short video messages back and forth, much like an asynchronous video chat. It promotes authentic communication without the pressure of live video calls.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API