4 open-source alternatives to Attio, curated: Atomic CRM, Frappe CRM, Ever Gauzy. Each is open-source; compare license and links below.
| Tool | What it is | License | Open source |
|---|---|---|---|
| Atomic CRM | Atomic CRM is an MIT React + Supabase CRM you fork and customize — contacts, kanban deals, tasks — while still pulling upstream component updates. | MIT | yes |
| Frappe CRM | Frappe CRM gives sales teams an AGPL-3.0 open-source CRM for leads, deals and customer interactions — with Twilio and Exotel calling built in. | AGPL-3.0 | yes |
| Ever Gauzy | OSS alt to Attio; ~4305 stars; via openalternative.co | AGPL-3.0 | yes |
| Relaticle | OSS alt to Attio; ~1494 stars; via openalternative.co | AGPL-3.0 | yes |