
Description: Cosian is an open-source note-taking and knowledge management app designed for personal and collaborative use. It allows users to create a knowledge graph of interconnected notes and resources.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Subway Tooter is a free and open-source Mastodon client app for Android. It provides a clean interface to access Mastodon social networks and interact with posts and other users. Key features include multiple account support, post compose, boosted post and profile views, media upload and filters.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API