Kanban boards or full project management
For Trello-like simplicity, consider Wekan, Planka, Kan, Kaneo, Kanri, Kanba, and Fizzy. Plane, OpenProject, Huly, Leantime, and Taiga add concepts such as sprints, Gantt charts, roadmaps, resource planning, epics, time tracking, documents, reporting, and portfolios. That extra functionality can help larger projects but may make the tool more complex than Trello.
Trello and Wekan
Wekan closely follows the boards, lists, cards, members, labels, due dates, attachments, comments, and filters model. The main difference is infrastructure: Wekan can run on your own server and gives you control over project data.
Trello and Planka
Planka has a familiar Trello-style interface with real-time collaboration, custom fields, timers, due dates, and self-hosting. Its current Fair Use License is not a conventional OSI-approved open-source license; older releases used MIT, so check the version and license before adoption.
Trello and Plane
Plane is a fit when simple boards are no longer enough. It adds issues, cycles, epics, initiatives, documentation, dashboards, AI agents, and engineering integrations, making it closer to Linear or Jira than to Trello.
Trello and Kan
Kan intentionally targets familiar board workflows with unlimited boards and cards, templates, search, activity tracking, collaboration, and Trello imports. Its narrower scope may make migration simpler than adopting a full project suite.
Personal Kanban and team collaboration
Kanri and Super Productivity are primarily personal tools for individual projects, daily tasks, freelance work, and local/offline productivity. Wekan, Plane, Planka, Kan, and OpenProject are more suited to collaborative teams.
Agile and enterprise project management
Taiga and OpenProject go further than Trello for formal Agile work. Taiga provides Scrum, sprint planning, backlogs, stories, epics, burndown charts, and Kanban. OpenProject adds Gantt, dependencies, budgets, time tracking, resources, and structured project planning.
Source available licensing
Current Planka releases use a Fair Use License rather than the older MIT license, and Fizzy uses a fair-source/O'Saasy-style license. Both can be self-hosted, but their current terms differ from conventional open-source licenses.