Open-Source Attio Alternatives, Ranked by Use Case

If you want to run your CRM on infrastructure you control and wire it up to AI agents without paying per seat, Relaticle is the closest fit. If you're building a custom internal platform and have the engineering capacity to run a Node, Postgres, and Redis stack, Twenty gives you the most room to extend. If you want a feature-complete CRM working on day one, with call logging, campaigns, and workflow automation already built in, EspoCRM gets there with the least custom setup. If your business already runs on ERPNext or you'd rather pay for compute than per seat, Frappe CRM fits that shape. None of this is a knock on Attio: a team that wants a polished, zero-ops SaaS CRM with built-in data enrichment, and doesn't want to run or patch anything itself, is better off staying on Attio and paying for that convenience.

This post compares four open-source options, Relaticle, Twenty, EspoCRM, and Frappe CRM, on license, pricing, AI/MCP capability, and how much work self-hosting actually takes. We maintain Relaticle, so treat that section with appropriate skepticism and check the sources linked throughout.

Screenshots: Twenty (twenty.com), EspoCRM and Frappe CRM (official GitHub repos); Relaticle from a live workspace.

How the four compare

Pricing, stars, and AI/MCP capability verified 2026-08-13/14; re-checked 2026-08-30.

Relaticle: agent-native, self-hostable, flat-priced

Relaticle is a Laravel and Filament CRM licensed AGPL-3.0. Self-hosting is free with no feature gating, or you can run the hosted version at a flat $24/mo (or $19/mo billed annually) for unlimited users, with AI credit packs sold on top for the chat assistant.

The distinguishing bet is that AI-native and self-hosted don't have to be mutually exclusive. Relaticle ships 37 first-party MCP tools (as of August 2026) and a built-in chat assistant, and both work against a self-hosted Ollama model as well as a hosted one, so a team that doesn't want CRM data leaving its own infrastructure for an AI API call can keep it there. In the built-in chat assistant, every AI-proposed write, updating a deal stage, deleting a contact, creating a task, surfaces as a pending-action card that a human has to approve before anything saves; the assistant proposes, it doesn't commit unilaterally. (External agents connected over MCP are a different surface and commit directly, as covered in our MCP guide.) If self-hosting it sounds right, the step-by-step guide covers Docker, Coolify, and Dokploy.

Where it falls short: it's a young project with a small contributor base, 7 contributors on GitHub as of writing against Twenty's 466. In practice that means fewer built-in integrations and no extension marketplace comparable to EspoCRM's, and no dedicated data-enrichment product bundled in the way Attio has one. If your team needs a mature ecosystem of pre-built integrations today, or wants the multi-year track record that comes with a much larger contributor base, that's a real gap.

Twenty: build a CRM platform, not just use one

Twenty is a Node/NestJS application (Redis, Postgres, and background workers) licensed AGPL-3.0 plus a Twenty Application Exception; files tagged as enterprise in the repository carry additional license restrictions, so check the license header before shipping a self-hosted build that touches them. Its GitHub numbers are well ahead of the other three: 54,877 stars and 466 contributors as of writing.

Twenty 2.0, released April 21, 2026, added a native MCP server tied to OAuth. Twenty's own site states every Cloud workspace ships with one, so an AI assistant can connect and read or write CRM data in natural language without a custom integration.

Hosted pricing is per seat: Pro is $9/user/mo, Organization $19/user/mo billed yearly, Enterprise from $50k/yr. Self-hosting needs a real multi-service stack to operate, a Node app, Redis, Postgres, and background workers, not a single binary or container. Twenty's MCP server works on Cloud and self-hosted deployments alike; its docs list a self-hosted endpoint with the same OAuth flow. We wrote a fuller head-to-head in Relaticle vs Twenty. Twenty is the strongest pick when the plan is to build a custom internal platform on top of a CRM data model and you have the team to run the infrastructure; it's a heavier lift if you just want AI tooling working on day one on your own servers.

EspoCRM: a complete suite, priced per seat

EspoCRM is a PHP application, AGPL-3.0, running behind a standard web server (Apache, Nginx, or IIS) with MySQL, MariaDB, or PostgreSQL 15, plus a cron job for background work: the kind of single-server LAMP-style deploy most PHP teams already know how to run, or a Docker setup if you'd rather not assemble it by hand.

It ships as a genuinely complete suite: call logging, campaigns, and workflow automation are built in rather than bolted on later, so an SMB evaluating it gets a working CRM without a build-out phase. The self-hosted core is free, but EspoCRM's extension marketplace, additional modules and integrations, is paid even for people running it themselves, so the real self-hosted cost isn't just server bills.

Cloud pricing is per user with seat minimums: Basic is $15/user/mo with a 3-user minimum, Enterprise $25/user/mo with a 5-user minimum, Ultimate $69/user/mo with a 10-user minimum. On AI, EspoCRM sells an official paid add-on called Intelligence (OpenAI, Gemini, and Claude providers; summaries, an AI email composer, formula functions). There's no first-party MCP server as of writing (2026-08-30), so agent-style tool access still needs a third-party extension or custom build. If the priority is a CRM that already does most of what a CRM does, and AI/MCP capability isn't the point, EspoCRM needs the least setup of the four to start using.

Frappe CRM: anti-per-seat, inside the ERPNext ecosystem

Frappe CRM pairs a Vue.js frontend (Frappe UI) with the Python-based Frappe Framework, licensed AGPL-3.0. As of writing it has 3,323 GitHub stars, 1,336 forks, and 60 contributors (github.com/frappe/crm, accessed 2026-08-14).

It's built by the team behind ERPNext, and that lineage matters: a business already running ERPNext for accounting, inventory, or HR gets Frappe CRM on the same framework and data model instead of a separate system to integrate. Frappe's pricing is explicitly not per seat. Frappe Cloud sites on shared infrastructure start at $5/mo, dedicated VM servers start at $20/mo (Hetzner) or $60/mo (premium), and Frappe's own pricing page states unlimited leads, deals, contacts, and sales agents on every plan (frappe.io/crm/pricing, accessed 2026-08-14).

Self-hosting is free under AGPL-3.0. A Docker Compose file or an easy-install script automates setup, about 5 minutes according to Frappe's own documentation, though the underlying stack, a Python runtime, MariaDB, and Redis, is more moving parts to operate long-term than a single PHP or Laravel app (github.com/frappe/crm, accessed 2026-08-14). We found no first-party AI or MCP tooling on Frappe CRM's site or repository as of writing, and its contributor count is the smallest of the four covered here. If your business is already inside the Frappe or ERPNext ecosystem, or compute-based pricing matters more than per-seat pricing, it's a legitimate pick; evaluated purely on AI/MCP capability, it currently has none.

Migrating off Attio

Attio doesn't lock your data in: every record type can be exported as CSV, and the mechanics of moving that export into an open-source alternative are largely the same regardless of which one you choose.

For Relaticle specifically, the import wizard (in Settings) accepts CSV uploads for companies, people, opportunities, tasks, and notes. A mapping step matches your CSV's column headers to Relaticle's fields, including any custom fields you've already defined, before anything is written, so an Attio export with custom attributes doesn't need to be flattened first. Files are capped at 10,000 rows and 10MB and are processed in batches of 500, so a large Attio export may need to be split into more than one file. Full instructions, including field-mapping specifics per object type, are at relaticle.com/help/import.

If you'd rather script the migration than run it through the UI, for example to backfill relationships between records or dedupe rows in transit, Relaticle also exposes a REST API with companies, people, opportunities, tasks, and notes endpoints, authenticated with API tokens, that a migration script can write to directly.

Either path, CSV import or the API, is a one-time write into Relaticle. There's no live two-way sync between Attio and any of the four tools covered here, so plan the cutover as an export-then-import, not a gradual mirror where both systems stay current.

Where to go next

For the fuller head-to-head on Relaticle specifically against Attio, feature parity, gaps, and all, see relaticle.com/alternatives/attio. For the other three, the primary source is still the project itself: Twenty, EspoCRM, and Frappe CRM.