Give Redmine(https://www.redmine.org/) a try and also Gitlab(https://about.gitlab.com/)

Thank you guys, we are now managing an app dev project now in a software called zentao (www.zentao.pm). It's very light and the bug trakcing module is really practical based on user stories. Our testers start to write cases to run later for testing once when have got the product backlog, it's quite a brilliant implementation.

Try Restyaboard ( https://restya.com/board ), a brilliant opensource project management software with an easy to use UI and tons of integrations. Task management, kanban board, Gantt chart, reminders, priorities, calendar, files, notes, time tracking, it has it all.

I like the UI of Wekan, but the funtionlities seem to be a bit simple. Redmine seem to be kinda ancient, anyway i will try others.

I personally use a self-hosted Phabricator (not exposed to the web). It has a wiki, but it can be a pain when updating PHP.

ProjectLibre rocks! I have been using for a couple years. They have 5,000,000 users around the world and no need to use Microsoft Project. It is open source and also runs on Linux or Mac

ProjectLibre rocks! They have 5,000,000 users around the world and is open source. No need for Microsoft Project and it runs on Linux or Mac as well

yeah, that is nice tool. I downloaded the open source version and it has a whole lot of features as agile tool!

Thank you guys, you really helped me out a lot.

Have you tried GitLab community edition?