ClosaraOpen-source and self-hosted Attio alternatives
Attio is a CRM you rent. Closara is a CRM you install on your own server.
The open-source CRMs that replace Attio
Attio is proprietary software offered as SaaS: it does not install on your server. These CRMs do; the licence is read from their public repository.
| CRM | Licence | Language | Source code |
|---|---|---|---|
| EspoCRM | AGPL-3.0 | PHP | github.com/espocrm/espocrm |
| SuiteCRM 8 | AGPL-3.0 | PHP | github.com/SuiteCRM/SuiteCRM-Core |
| Odoo Community | LGPL-3.0 | Python | github.com/odoo/odoo |
| Twenty | AGPL-3.0 (some files under a commercial licence) | TypeScript | github.com/twentyhq/twenty |
| Closara | Proprietary, source code delivered (not an OSI licence) | Node.js, SQLite | - |
Licences checked on 2026-09-24 in each public repository's licence file. All of them install on your own server; so does Closara, but its code is delivered under a proprietary licence.
Attio and Closara, line by line
| Attio | Closara | |
|---|---|---|
| Hosting | SaaS, on the vendor's servers | Your server or your VPS |
| Code licence | Proprietary, code not published | Proprietary, source code delivered (not an OSI licence) |
| Billing model | Per seat, with automation and reporting features that depend on the tier you choose. | One tier plus modules, unlimited seats |
| Price | Attio pricing page | Closara pricing |
No price is copied here: prices change without notice. We compare billing models, and each column links to the original pricing page.
How Attio bills
Per seat, with automation and reporting features that depend on the tier you choose.
What keeps you on Attio
Lock-in is almost never a contract clause. It is accumulated work you cannot take with you.
- A very flexible data model becomes bespoke, and bespoke does not travel.
- Automations and reporting depend on the tier: check which one includes them.
- Vendor-hosted, with no self-hosting option.
What Closara does instead
- On your server, not in their cloud
- No per-seat subscription
- The AI runs locally
- White-label included
- The code and the database are yours
Details, the demo and pricing are on the Closara page.
Migrating from Attio to Closara
The API and exports are documented by the vendor; the hard part is rebuilding your custom views somewhere else.
- Read before writing: a full Attio export is loaded read-only into Closara. Nothing is deleted on their side, nothing is irreversible.
- One week in parallel: the team works in both tools for seven days. Deliberately short: beyond that, nobody keeps it up and the data diverges.
- Move the users: accounts move to Closara, running sequences are replayed at the same cadence, meetings follow.
- Cancel, not before: the Attio subscription stops once a full week has run without falling back. Keep a dated export: that is your safety net.
When you should stay on Attio
If your team enjoys shaping its own data model in the tool and data hosting is not a criterion, staying on Attio spares you a migration.
We would rather lose a sale than install a tool nobody will use. A migration costs team time, and that time never comes back.
Frequently asked questions
Is there an open-source alternative to Attio?
Yes: EspoCRM (AGPL-3.0), SuiteCRM 8 (AGPL-3.0), Odoo Community (LGPL-3.0) and Twenty (AGPL-3.0, some files under a commercial licence) are open source and install on your own server (licences checked in their repositories on 2026-09-24). Closara is not open source: it is a self-hosted CRM whose code is delivered to you, with local AI and unlimited seats.
Is Attio open source?
No. Attio is proprietary software hosted by its vendor: you can export your data, but you cannot audit the code, install it in-house, or modify its code.
Can you self-host Attio?
No. No edition of Attio installs on your infrastructure. If self-hosting is your criterion, the answer is not to negotiate with them but to change tool category.
How do you migrate from Attio to Closara?
The API and exports are documented by the vendor; the hard part is rebuilding your custom views somewhere else. The switch happens in four steps: pull the data read-only, run one week of outbound in parallel, move the users, then shut the old tool down. Nobody works in two tools for more than seven days.
Is Closara cheaper than Attio?
It depends on your headcount, and we do not quote their prices: they change. Attio applies its own model, described on its pricing page; Closara charges one tier plus modules, never the number of users, and hosting it yourself is free. Run the numbers with your seat count on Closara's pricing page, which compares the two models.
What data can you export from Attio?
The API and exports are documented by the vendor; the hard part is rebuilding your custom views somewhere else.
When should you stay on Attio?
If your team enjoys shaping its own data model in the tool and data hosting is not a criterion, staying on Attio spares you a migration. We would rather say it plainly: a failed migration costs more than a subscription.
The other comparisons
More on self-hosted CRMs
Written by Skander Mallek, founder of INEYA Studio, which builds Closara. Reviewed and updated on 2026-09-24. For information only, not advice: check pricing and features with the vendor before deciding.
Your CRM. On your server.
Sovereign, local AI, white-label, no per-seat subscription.