Redmine - Flexible project management web application
Height - Height is a project management tool for your whole team.- Task lists to keep your team synced- Chats to keep conversations about work in one place- Lightning fast with Cmd-K, custom shortcuts, and jump to- Integrations to automatically update tasks
Zenkit - Zenkit is the home you always wanted for your ideas, your projects, your business.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Taiga.io - An Agile, Open Source, Free Project Management System
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.