
Description: Teeworlds is a free and open source 2D retro multiplayer shooter game. It features simple and smooth gameplay with pixel art graphics, several game modes like deathmatch and capture the flag, and online multiplayer supporting up to 16 players.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Annelids is an open-source, cross-platform note taking and to-do app. It allows users to create rich text notes, to-do lists, and sketch diagrams. Key features include tagging, encryption, syncing between devices, and flexible exporting.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API