Redmine is a flexible project management web application. Written using Ruby on Rails framework, it is cross-platform and cross-database.
Taiga is the easy and intuitive yet powerful agile project management tool for multi-functional teams. Taiga has a best in class Sprint task board, and you can seamlessly migrate to Kanban if needed.
HumHub is a free social network software and framework built to give you the tools to make teamwork easy and successful.
ZenTao is an open source project management tool, supporting Scrum. It integrates product management, project management, bug management and QA management, etc., covering all lifecycle of software development.
Opensource task & productivity management tool for startups, engineered based on the concepts of OKR.This app doesn't have any features at the moment.Discontinued
The last update was in 2019, and the live demo is unavailable.