
Description: Kotatsu is an open-source alternative to Jira for agile project management and issue tracking. It provides kanban boards, backlogs, roadmaps, reporting, and integrations with Git, Slack, and more to help teams collaborate on projects.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Tachiyomi is a free and open-source manga reader app for Android. It has a modern, intuitive interface and allows users to track, download, and read manga from a variety of sources.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API