Twenty
98 · HealthyModern CRM with a spreadsheet-like data model, custom objects and workflows.
Open source alternatives to Close
4 open source projects replace Close, ranked by how safe each is to depend on.
Frappe CRM
82 · HealthySales CRM for leads, deals and contacts, with Kanban pipelines, email, calling integrations and SLAs.
Comp AI CRM
75 · StableCRM built around AI agents, which read and update contacts, companies and deals alongside the sales team.
EspoCRM
71 · StableWeb CRM for leads, accounts, opportunities and email, with a customizable entity model.
At a glance
Health and license are separate verdicts: a project can be well maintained and still not be open source.
| Project | Health | License | Stars |
|---|---|---|---|
| Twenty | 98 · Healthy | Free core, paid extrasAGPL-3.0 + extra terms | 58k |
| Frappe CRM | 82 · Healthy | Free, share hosted changesAGPL-3.0 | 3.8k |
| Comp AI CRM | 75 · Stable | Free to useMIT | 11k |
| EspoCRM | 71 · Stable | Free, share hosted changesAGPL-3.0Relicensed 2023 | 3.5k |
More in CRM
Close is a paid CRM product. See all open source CRM tools, ranked the same way.
Scores last refreshed from GitHub on 9 October 2026. How we score.