# Open-source alternatives to Attio

Attio is a flexible, data-driven CRM with built-in automations and AI. If you would rather own the software, keep data on your own server or avoid per-seat pricing, these open-source tools tackle the same problem: close more sales. Most deals aren't lost, they're forgotten. Clean pipelines, fast follow-up and frictionless signatures close the gap.

## Closest matches
- [Twenty CRM](https://infinioffice.com/tools/twenty-crm/): Open-source CRM positioned as an alternative to Salesforce, designed for AI. (https://github.com/twentyhq/twenty)
- [Odoo](https://infinioffice.com/tools/odoo/): Open-source business apps: CRM, invoicing, inventory, website and more. (https://github.com/odoo/odoo)

## Also open source in Close more sales
- [Cal.com (open source)](https://infinioffice.com/tools/cal-com-open-source/): Open scheduling infrastructure: booking pages, round-robin and routing you can self-host. (https://github.com/calcom/cal.diy)
- [Documenso](https://infinioffice.com/tools/documenso/): Open-source DocuSign alternative for sending and signing contracts. (https://github.com/documenso/documenso)
- [Firecrawl](https://infinioffice.com/tools/firecrawl/): Turns websites into LLM-ready data: crawl competitors, research leads, feed agents. (https://github.com/firecrawl/firecrawl)

## Hosted vs open source

Open source swaps a subscription for setup time. Attio is hosted, supported and updated for you; with the tools below you (or someone you hire) install, update, back up and secure them. 0 of the 5 with a setup rating here need a developer. Most can also be bought as a hosted cloud plan from the same maintainers, which is a good middle path. Check each licence before you build on it.

Attio on InfiniOffice: https://infinioffice.com/tools/attio/