
Description: Nada is an open-source program that allows you to make audio calls over the internet. It is designed to be simple, lightweight, and easy to use for making Voice over IP (VoIP) calls.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: FakeMail is a free, open-source email client that provides basic email functionality without needing to connect to a real email account or server. It allows testing and prototyping email workflows locally.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API