Project management tools range from a single kanban board to full planning suites with sprints, roadmaps and time tracking. These are the open-source options with the biggest communities.
Issue tracking and planning
1
plane makeplane/plane
Names Jira, Linear, Monday and ClickUp as what it replaces: issues, cycles, modules and docs with a fast interface. AGPL-3.0.
2
platform hcengineering/platform
Huly: project management together with chat, docs and a CRM in one platform.
3
openproject opf/openproject
Mature planning with Gantt charts, agile boards and time tracking, popular in public sector and engineering. GPL-3.0.
4
leantime Leantime/leantime
Goal-focused project management designed for people who are not project managers.
Kanban boards (Trello-style)
5
focalboard mattermost-community/focalboard
Boards, tables and calendars, describing itself as an alternative to Trello, Notion and Asana. Community-maintained.
6
wekan wekan/wekan
A long-running open-source kanban board. MIT.
7
kanboard kanboard/kanboard
Minimal kanban that runs on almost any PHP host. MIT.
How to choose
Software teams leaving Jira or Linear: Plane. Classic project planning with Gantt and budgets: OpenProject. A simple board for a small team: WeKan or Kanboard.
How we pick: we start from every public GitHub repository with 1,000+ stars, keep the projects that do the job in the title, and read their descriptions and licenses. Stars show community size, not quality, so we also show maintenance status. Nobody paid to be listed.