
Description: Betterbird is a free and open source alternative to Twitter. It has similar core functionality like tweeting, following other users, liking and retweeting posts. Betterbird focuses more on chronological timelines rather than algorithmic feeds.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: aerc is a terminal email client aimed at being fast, efficient, and easy to use. It has a clean and intuitive interface, supports multiple accounts, servers, and identities, handles encryption well, and has good performance with large mailboxes.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API