BookStack

Phacility - Phabricator

TaskBoard

Kanban Project Management Software - Kanboard

OpenProject - online project management software - free and open source

Planning en ligne gratuit - SO Planning logiciel de planning partagé

Collabtive Open Source Project Management Software and Groupware - Collabtive Open Source Project Management, Project Mangement Tool and Resource for Collabtive Use

qdPM - Project Management, Time Tracking, Support Tickets, Open Source