
Description: Oysttyer is an open-source, self-hosted social networking and microblogging server based on the ActivityPub protocol. It allows users to post short messages, follow other users, share media, and communicate across the fediverse.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Nitter is a free and open source alternative front-end to Twitter. It avoids Twitter's JavaScript to improve privacy, security, and speed. Nitter strips away ads, recommendations, and other unnecessary feeds.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API