Plane
92 · HealthyIssue tracking with cycles, modules and pages, aimed at software teams.
8 open source projects replace Smartsheet, ranked by how safe each is to depend on.
Issue tracking with cycles, modules and pages, aimed at software teams.
Project management suite with Gantt charts, agile boards, time tracking and wikis.
Goal-oriented project management designed with neurodivergent users in mind.
No-code database and app builder with a spreadsheet interface.
Relational spreadsheet with Python formulas, custom widgets and fine-grained access rules.
Long-running issue tracker and project manager with Gantt charts, time tracking, wikis and a large plugin ecosystem.
Spreadsheet-style database on Postgres with views, forms, automations and real-time collaboration.
Project management with tasks, timelines, workload views, time tracking and client portals.
The code for these is public, but the license is not an OSI open source license, or we have not verified it yet. Check the license notes on each project before relying on it.
Spreadsheet-style interface over SQL databases, positioned as an Airtable replacement.






Health and license are separate verdicts: a project can be well maintained and still not be open source.
| Project | Health | License | Stars |
|---|---|---|---|
| Plane | 92 · Healthy | Free, share hosted changesAGPL-3.0Relicensed 2023 | 61k |
| OpenProject | 88 · Healthy | Free core, paid extrasGPL-3.0 | 16k |
| Leantime | 83 · Healthy | Free, share hosted changesAGPL-3.0 | 12k |
| Baserow | 83 · Healthy | Free core, paid extrasMIT | 6.1k |
| Grist | 78 · Stable | Free to useApache-2.0 | 12k |
| Redmine | 75 · Stable | Free, share changesGPL-2.0-or-later | 6.0k |
| Teable | 62 · Stable | Free, share hosted changesAGPL-3.0 | 22k |
| Worklenz | 49 · Caution | Free, share hosted changesAGPL-3.0 | 3.2k |
| NocoDB | 91 · Healthy | Internal use onlySustainable Use License 1.0Relicensed 2026 | 65k |
Smartsheet is a paid project management product. See all open source project management tools, ranked the same way.
Scores last refreshed from GitHub on 9 October 2026. How we score.