
Description: App.net was a microblogging and social networking service created in 2012 that focused on providing a simple, chronological feed. It charged a monthly subscription fee and positioned itself as an alternative to free services like Twitter by offering an ad-free experience focused more on the user experience than advertising revenue.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Mastodon is an open-source, decentralized social media platform similar to Twitter. It allows users to post 'toots' of up to 500 characters to followers within a federated network of independently operated servers.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API