Best Open-Source CRM in 2026.

"Open source" is doing a lot of work in this category. Two projects can both call themselves open-source CRM and mean completely different things by it — one you can fork and sell, one that obliges you to publish your changes, one where the feature you actually need is held back in a way the repository doesn't advertise. The licence is the most consequential line in any of these comparisons, and it's usually the line the comparison skips.

What is the best open-source CRM in 2026?

There isn't one winner. Twenty is the best-looking modern CRM and the easiest to like. EspoCRM is the fastest on cheap hosting and reaches furthest past sales. SuiteCRM is the most customisable for enterprise sales processes. Odoo and Dolibarr win on breadth. ERPNext is the strongest free ERP. Monica is the one built for personal relationships rather than pipelines. Munin is the pick if you want a whole customer platform under MIT that AI agents operate directly.

Which you should choose depends on one question: do you need a sales pipeline, or do you need the whole customer relationship? Most of this category answers the first. Below is what each one actually licenses you to do, verified against the licence files rather than the badges — because on three of these projects the badge and the file disagree.

Which open-source CRM licences are actually permissive?

One of them. Twenty, EspoCRM, SuiteCRM, Frappe CRM, and Monica are all AGPL-3.0 — strong copyleft, fine for internal use, but if you modify the code and offer it as a hosted service you can be obliged to publish your changes. Odoo Community is LGPL-3.0, Dolibarr and ERPNext are GPL-3.0, Vtiger runs its own non-OSI licence, and Munin is MIT throughout.

That spread is worth being precise about, because the licence decides what you're allowed to build:

• AGPL-3.0Twenty, EspoCRM, SuiteCRM (both 7.x and 8.x), Frappe CRM, and Monica. Network copyleft: modify it, host it for others, and the obligation to publish attaches. EspoCRM sells a commercial licence explicitly as the way out — if AGPL is a problem for you, the fix is a cheque.
• LGPL-3.0Odoo Community. Weaker copyleft than AGPL and genuinely open, but the Enterprise edition is a separate product under the Odoo Enterprise Edition License v1.0, and its code lives in a private repository you need a subscription to see.
• GPL-3.0Dolibarr (GPL-3.0-or-later, per its COPYING file) and ERPNext. Both are unusual in this field for holding nothing back — no gated edition, no paid tier of the codebase. Money enters through hosting and third-party modules instead.
• Not an OSI licence at allVtiger. The open-source edition ships under the Vtiger Public License 1.1, a Mozilla Public License 1.1 derivative Vtiger wrote itself, layered over inherited SugarCRM Public License 1.1.2 code. It is source-available and forkable in practice; it is not on the OSI's approved list.
• MIT, nothing held backMunin. Permissive, no copyleft obligation, no separately licensed files, and the suite in the public repository is the same code we run in Cloud.

How do I tell if an open-source CRM has paywalled features?

Look for three shapes, not one. Some projects put the commercial code in a visible enterprise/ or ee/ directory. Some mark individual files with a licence header and leave them in place. Some keep it in a separate repository you can't see at all. Only the first is obvious from browsing the tree, and it is the least common of the three.

The file-marker pattern is the one that catches people, and Twenty is the clearest example. Its root LICENSE says so in the opening lines: certain files carry the comment /* @license Enterprise */ at the top, and those files "are not licensed under the aGPL v3" but under The Twenty.com Commercial License, which forbids copying, publishing, sublicensing, and selling. packages/twenty-server/src/engine/core-modules/sso/sso.module.ts is one of them. There is no twenty-ee package to find; the SSO implementation is sitting right there in the tree you cloned, under different terms from the file next to it. Twenty is unusually honest about this — it also grants an AGPLv3 Section 7 exception so apps you build against its APIs can stay proprietary, and MIT-licenses its SDKs, twenty-shared, twenty-ui, and everything under packages/twenty-apps. The terms are all written down. They are just not one licence.

Odoo shows the separate-repository shape: nothing in odoo/odoo is held back, because the Enterprise code was never in odoo/odoo — it is in odoo/enterprise, private, gated to partners and subscribers. Vtiger shows a fourth variation: the open-source edition and Vtiger Cloud are two different codebases, and Vtiger's own comparison page marks dozens of Cloud features unavailable in the open-source build. Reading the LICENSE file is necessary. It is not sufficient.

Is Twenty a good open-source CRM?

Yes — Twenty is the strongest pick on this list if a sales pipeline is all you need, and the one we'd recommend for that job. It has the most modern interface in the category, ships both REST and GraphQL, serves an MCP server on every plan including self-hosted, self-hosts via Docker, and at more than 55,000 GitHub stars has one of the largest followings of any modern open-source CRM. Its constraint is scope: it's a CRM, not a customer platform, and the proprietary end of that same pipeline-first field is covered in the Pipedrive comparison.

The cost case for self-hosting is genuinely strong. An Open Source Alternatives analysis put Twenty self-hosted at roughly $4,500–$10,800 over three years — VPS at $20–40 a month, implementation costed at $100 an hour, and two to five hours a month of maintenance — against $86,000–$132,000 for Salesforce Enterprise over the same period. Treat those as indicative rather than a quote, but the gap is the entire reason this category exists, and it holds for any of the self-hosted options here.

On Twenty's own pricing page the hosted plans are $9 per user per month for Pro and $19 for Organization; Enterprise starts at $50,000 a year. The line between Pro and Organization is worth reading closely, because it is where the file markers show up as invoice: row-level permissions, SAML/OIDC SSO, audit logs, encryption key rotation, and a custom domain are all Organization and above. API rate limits move too — 50 requests a minute on Pro, 100 on Organization. Pro ships AI agents with custom skills and includes 50 workflow credits a year, so the automation is metered above that number rather than unlimited. And there's no knowledge base, no support inbox, no CMS — so if your customer record needs to be shared with the people answering support tickets, you're back to running two systems and syncing them.

What about EspoCRM, SuiteCRM, and Odoo?

Each is the right answer to a narrower question, and each prices itself on a different basis, which makes them harder to compare than a table suggests.

EspoCRM is fast, simple, and performs well on lightweight hosting — the pick when you want something responsive on a cheap VPS. It also reaches further past sales than the rest of this group: Cases, a Customer Portal, and a Knowledge Base ship in the product, so the support half of the customer relationship is genuinely there rather than left to an integration. EspoCRM Cloud is $15 per user per month for Basic with a three-user minimum, $25 for Enterprise with a five-user minimum, and $69 for Ultimate at ten; all plans include every official extension at no extra cost, and there's a Germany region for EU data. One thing to know before you commit: on Cloud, admins can't install extensions themselves — you ask EspoCRM to do it.

SuiteCRM is the most customisable, with enterprise-grade modules across sales, marketing, service, and operations; it's the traditional open-source Salesforce replacement, and the full Salesforce comparison covers where it lands against the real thing. Both 7.x and 8.x are AGPL-3.0 with nothing gated. Its hosted offering is the interesting outlier in this whole field: SuiteCRM Hosted is priced per instance rather than per user — £130 a month annually for Starter at up to 10 users, £180 for Business at up to 50, £280 for Premium at up to 150, all excluding VAT. If you have thirty people who each touch the CRM twice a week, that maths is very different from $9 a seat.

Odoo isn't really a CRM at all — its CRM is basic, but with dozens of modules sharing one ORM and data model it becomes an ERP, which is either exactly what you want or far too much. Cross-module workflows genuinely work there in a way bolted-together tools don't. Community is LGPL-3.0; check the pricing page from your own country before budgeting, because it is geo-localised and the headline per-user figure is a first-year discount rather than the standing rate.

All three are mature, all three have communities that will outlive any given vendor, and all three belong on your shortlist if what you need is the classic shape of a CRM.

What other open-source CRM and client management software is worth knowing?

Four that get left off most lists and shouldn't be. Dolibarr is GPL-3.0-or-later with around a hundred built-in modules covering CRM, invoicing, stock, HR, and accounting, and it holds nothing back — there is no paid edition of the codebase at all. Hosting comes from certified partners rather than from Dolibarr itself; DoliCloud is one of them, at 14 € per user per month ex-VAT for Basic.

ERPNext is GPL-3.0 and is probably the most complete genuinely free ERP in existence — accounting, manufacturing, inventory, HR, no per-user licence fee. Frappe CRM is a separate, lighter product from the same company, and here the metadata will mislead you: its package.json still says GPL-3.0, but the LICENSE file is the Affero GPL v3. Both sit on Frappe Framework, which is MIT. Frappe Cloud prices on compute rather than seats — "instead of per-user pricing", in their words — from $5 a month for a shared site and $40 for a dedicated server.

Vtiger has two decades of continuous development behind it and a genuinely complete suite — sales, marketing, help desk, inventory, projects, natively integrated. Two things to weigh: the licence isn't OSI-approved, and the open-source release cadence has slowed markedly. Version 8.4.0 shipped on 9 July 2025 and is still the current stable download, largely a PHP 8 compatibility release. Vtiger Cloud runs from free on One Pilot (10 users, 3,000 records) through $12 per user per month on One Growth to $30 on One Professional, billed annually. The Cloud product is clearly where the investment is going.

What is the best self-hosted CRM?

For a pipeline, Twenty — Docker-based, modern, AGPL-3.0 core, and self-hosting gets you the same product minus SSO and row-level permissions. For breadth on one box, Dolibarr or ERPNext, both GPL with nothing held back. For the whole customer relationship on one database under a permissive licence, Munin. All of them cost you hosting and maintenance rather than seats.

The part people underestimate is the second sentence of that trade. A self-hosted CRM has no licence cost and a real operating cost: upgrades, backups, TLS, a database you are now responsible for. The Open Source Alternatives figures above put that at two to five hours a month of somebody's time, and that estimate is the honest middle of the range rather than the low end. If nobody on your team wants to own a Postgres, the correct answer is a hosted plan from one of these vendors, not a self-host you'll stop patching in March.

What self-hosting does buy you, and it is the reason to do it, is that the exit is yours. We wrote up the full single-host setup for a CRM and help desk together, including the parts that are annoying rather than the parts that demo well.

How do I run an open-source CRM in Docker?

Every option on this list ships container images, so the shape is the same in each case: a database service, an application service, a reverse proxy in front for TLS, and a volume you actually back up. Munin's is three commands from a clean host, and brings up all six modules together rather than the CRM alone:

git clone https://github.com/getmunin/munin
cd munin
docker compose up

Read the repository's own README for the environment variables to set before you expose it to the internet — secrets and database credentials are the part no compose file should guess for you. Twenty and Odoo are likewise Docker-first; EspoCRM publishes an official image and also runs on ordinary LAMP hosting, which is why it turns up on €5 VPS boxes more than anything else here.

The honest warning for all of them: docker compose up is the easy afternoon. The following February — when Postgres needs a major-version upgrade and your backup has never once been restored — is the real cost of self-hosting, and it is the same cost whichever of these you pick.

Is there an open-source personal CRM?

Yes — Monica is the one built for it, and it isn't a sales tool wearing a different label. It tracks people rather than deals: contacts, how they're related to each other, a journal, reminders, notes on the conversation you had last month. AGPL-3.0, self-hostable, and deliberately not a social network. Hosted is $9 a month or $90 a year on a single plan with unlimited contacts.

Check the release history before you deploy the stable line, though. The last tagged release is v4.1.2 from 4 May 2024; the main branch is a ground-up v3 rewrite still labelled beta, with an API and an MCP server listed as coming with it. The project is alive and mid-rewrite rather than abandoned, but "mid-rewrite" is a real thing to know about software you're about to put your address book into.

Everything else on this page is a business CRM, and using one as a personal CRM mostly works — a contact record with a pipeline field you ignore. Munin included: it will hold people and the history of what you said to them perfectly well, but it was built for a company's customers, and Monica was built for yours.

Which open-source CRM can an AI agent actually drive?

All of them, now. That's the honest answer, and it's a change from a year ago. Twenty ships a first-party MCP server on every plan including self-hosted. Frappe publishes a first-party MCP SDK, though it is a generic framework tool with no pre-built ERPNext tools and describes itself as highly experimental. Odoo, SuiteCRM, EspoCRM, Dolibarr, Vtiger, and Monica are all reachable through community MCP servers or aggregators like Zapier and Pipedream, and every one of them has a REST API underneath.

So "has an endpoint" has stopped being a differentiator, and anyone still selling it as one is a year behind. The two questions that replaced it are who maintains the endpoint — a vendor's own team, or a volunteer whose repository was last touched in spring — and, much more importantly, how much of the customer sits behind it.

That second question is where these options separate. Point an agent at a CRM's MCP server and it can read and write the CRM. Ask it to answer the support ticket the deal came from, check what the customer already read in the docs, and draft the follow-up, and it needs three more endpoints, three more auth flows, and some opinion about which system holds the truth. Munin's catalogue is one endpoint over one schema: more than 200 MCP tools spanning CRM, conversations, knowledge base, CMS, outreach, and analytics, plus a REST API and around 50 bundled markdown skills an agent reads at runtime to learn the workflow instead of being prompted through it. Counts move as we ship — the live catalogue is public at api.getmunin.com/v1/public/mcp-tools.

What makes Munin different from the rest of this list?

Two things. Munin isn't only a CRM — CRM, knowledge base, CMS, outreach, conversations, and analytics run on one Postgres database with a single shared contact record. And the tool catalogue is the primary surface, not a bolt-on, so Claude, Cursor, ChatGPT, or your own runner operates the platform directly rather than clicking through a UI.

The shared-record part is the less obvious win. Every other option on this list solves CRM well and leaves some combination of support, content, and outreach to other software, which means a sync job and two versions of the truth about every customer. We put all six modules behind one schema, with the tenant boundary enforced in the database rather than remembered by application code, precisely to avoid that — which is what keeps one customer visible across all six.

The agent part is the bet. If the cheapest operator of your systems is no longer a person, the UI stops being the product and the tool catalogue becomes the thing that matters. Munin is MIT-licensed because portability is a better moat than lock-in — every module has a matched export/import pair, so leaving is a sequence of tool calls. Cloud Free is €0 a month with 5,000 MCP calls, 250 contacts, and 100 MB of storage; Cloud Premium is €99 a month flat for the whole organisation with metered overage, and is launching soon.

Who should not pick Munin?

Three buyers, and the criteria are concrete rather than tonal. If you want a polished sales UI your team can open and understand in an afternoon, Twenty is built for precisely that. If you need sales forecasting, territory management, or quote-to-cash, SuiteCRM ships a decade of those modules and Munin ships none of them. If you need ERP — manufacturing, inventory, double-entry accounting — take Odoo or ERPNext. Munin's scope also stops short of a support reporting suite: no SLA timers, no CSAT surveys, no agent-performance dashboards.

What's left after those three is a specific buyer, and it's worth naming precisely, because none of the CRMs above are aimed at them. One customer record shared by the people answering support, writing the docs, and sending the outreach — not four records kept in sync by a nightly job. A permissive licence with no copyleft obligation, no commercially marked files, and no private repository holding the useful half, so the thing you self-host is the same code we run in Cloud. And a tool catalogue instead of a screen, because the operator you're optimising for is software rather than a person. That combination is why a single pass can enrich a contact, triage the thread it came from, and draft the knowledge article behind it — one job across one schema rather than three integrations and a sync. If that's the shape of your problem, it's the shape Munin was built to fit.

Open-source CRMs compared

Licences and packaging change, and three of the rows above disagree with their own project's badge or metadata. Check the repository before you commit — including for us.

Frequently asked questions

What is the most permissively licensed open-source CRM? Munin, under MIT. Twenty, EspoCRM, SuiteCRM, Frappe CRM, and Monica are AGPL-3.0, a copyleft licence that can require you to publish modifications if you offer the software as a service. Odoo Community is LGPL-3.0; Dolibarr and ERPNext are GPL-3.0. MIT carries no such obligation — fork, modify, self-host, resell, without publishing your changes.

Is AGPL a problem for my company? Usually not. For internal use — your team running the CRM for your own business — AGPL imposes no practical obligation. It becomes a question if you modify the code and offer it to third parties as a hosted service. Many legal teams still prefer to avoid it, which is why AGPL vendors sell commercial licences alongside.

What is the best open-source self-hosted CRM? Twenty if you need a pipeline, Dolibarr or ERPNext if you need breadth with nothing gated, Munin if you need the whole customer relationship on one record under MIT. All three self-host with Docker. Your real selection criterion is which one you'll still be patching in six months.

Can I run an open-source CRM with Docker? Yes — every option on this page publishes container images. Munin is git clone, cd, docker compose up, and brings up all six modules together. Twenty and Odoo are Docker-first. EspoCRM publishes an official image and also runs on plain LAMP hosting. Budget for TLS, backups, and Postgres upgrades in every case.

Is there an open-source personal CRM? Monica, under AGPL-3.0 — built for tracking people rather than deals, with relationships, a journal, and reminders. Hosted is $9 a month. Note that the last tagged release is v4.1.2 from May 2024 and main is an unreleased v3 rewrite, so check the release page before deploying the stable line.

Which open-source CRM works with AI agents? All of them, by different routes. Twenty ships a first-party MCP server on every plan. Frappe publishes a first-party MCP SDK, generic and experimental. Odoo, SuiteCRM, EspoCRM, Dolibarr, Vtiger, and Monica are reachable via community servers or aggregators. Munin exposes more than 200 MCP tools at one endpoint across all six modules, so the agent doesn't stop at the CRM boundary — it can read the support thread, check the docs the customer read, and draft the follow-up in the same pass. The question is no longer whether a CRM has an endpoint. It's how much of the customer sits behind it.

How much does an open-source CRM cost in practice? The licence is free; the operating cost isn't. An Open Source Alternatives analysis put Twenty self-hosted at $4,500–$10,800 over three years, mostly infrastructure and engineering time, against $86,000–$132,000 for Salesforce Enterprise over the same period. Both figures are indicative rather than quotes — your own hourly rate moves them more than anything else does.

Do I need to self-host to avoid lock-in? No. Lock-in is about data portability, not hosting. What matters is whether you can get everything out cleanly and whether the code is available if the vendor changes. Munin Cloud runs the same MIT code as the repo, with a matched export tool on every module.

Which open-source CRM should I move to from HubSpot? If you only need the pipeline, Twenty. If you want the breadth HubSpot gave you — CRM, support, knowledge, content, outreach, analytics — on one record, Munin covers the same ground under MIT. The full HubSpot alternatives ranking is here, including the ones that aren't open source, and the migration itself has its own runbook.

If the customer your support team answers has to be the same record your outreach writes to, the repository is MIT with nothing marked otherwise, and the docs start with the endpoint rather than the screen.

Read the licence. It's the only part of this comparison nobody can market at you.