What is the best open source CRM in 2026?

Twenty is the youngest tool on this list and the one that feels most like a modern subscription CRM. It was founded in Paris in 2023, raised a seed round of about €4.7M, and its repository has passed 60,000 GitHub stars.

You build your own objects, fields and views with no caps on any plan, and a new rep can find their way around in an afternoon. That's not something you can say about the older tools here.

The core is AGPLv3. Files marked Enterprise are under a commercial license and need a subscription in production. So you can run the CRM for free, but some advanced pieces are paid: the open core model.

Hosted, Pro costs $9 per user per month billed annually, or $45 a month for 5 users. Pro has no SSO, no custom roles and caps the API at 50 calls per minute. SSO, roles and audit logs need Organization at $39.

Self-hosting runs on Docker Compose but needs PostgreSQL, Redis and a background worker, with 2 GB of RAM documented. And the project moves fast: one user's upgrade from 1.18 to 1.21 broke on a schema mismatch and ended in a reinstall. The docs say multi-version jumps work from 1.22 on.

Odoo is an ERP split into apps, and CRM is one of them. The vendor is Belgian. Community is open source under LGPLv3; Enterprise is under a commercial license.

Its strength is the flow: an opportunity becomes a quote, then an order, then an invoice, with no re-typing. Nothing else here goes that far. If all you need is a pipeline, it's a lot of software.

Check what Community leaves out. Full accounting, the Studio customization tool and bank sync are Enterprise features, as we cover on our switch from Odoo page.

To try it without a server, Odoo Online gives you one app free with unlimited users. A second app moves you to Standard: $31.10 per user per month billed annually ($38.90 monthly), or $155.50 a month for 5 users. Multi-company or Studio pushes you to Custom at $61. The annual discount lasts 12 months for users on the initial order.

The real Community trap is upgrades. Odoo provides no official migration tool for the free edition. The community-run OCA maintains OpenUpgrade, which moves one version at a time with no guarantee, and upgrade problems dominate the project's most-commented issues.

EspoCRM is AGPLv3, lean and fast. It needs only a database (MySQL, MariaDB or PostgreSQL) and PHP, with an official Docker image: the lightest install on this list.

Fields, layouts and relationships are all customizable without code, which is what users praise most. The common complaint is fewer integrations than the big vendors.

Understand this before you self-host. The hosted plans include the Advanced Pack and official extensions. The Advanced Pack is what gives you reports, workflows and process automation. On your own server you have to buy those extensions, and their licenses renew every 1 or 2 years. Without it, there are no reports. A forum user asked why it isn't a one-time purchase; the thread has no answer.

Hosted pricing: Basic $15 per user per month (3 users min., 100,000 records), Enterprise $25 (5 min., 10 million records), Ultimate $69 (10 min., private server). Billing is every 6 or 12 months, with a 30-day trial. For 5 users: $75 a month on Basic, $125 on Enterprise.

SuiteCRM is built by UK-based SalesAgility under AGPLv3. On pure CRM features (sales, customer service, campaigns, quotes, workflows) it's the richest open source option, which is why so many lists put it first.

The trade-off is weight. There's no official Docker image, a cron job is mandatory, and email configuration is the top user complaint. Developers also flag a legacy codebase.

The big issue is the jump from version 7 to 8. The upgrade package only works from 7.14.x. On the official forum, a user moving from 7.14.6 to 8.7.1 hits a date conversion error at the legacy post-upgrade step, the same error repeats on later releases, and the thread has no fix. Starting fresh? Install 8 directly.

The download is free, with free community support. Managed hosting starts at £50 a month, but Standard support is then required: £1,200 for 10 hours (20% off with hosting). SuiteASSURED starts at £3,350 a year with 10 hours included. Those support hours are SuiteCRM's real cost.

Dolibarr is a free software CRM and ERP backed by a French project and association. You switch on the modules you need: third parties, proposals, orders, invoices, inventory, calendar. There's no separate paid edition.

DoliCloud is the official hosted offer. Basic is €14 per user per month excl. VAT, with 4 GB of storage, 250 emails a day and 2,000 API calls a month. Premium is €30 flat plus €15 per user, with 20 GB and unlimited email through your own SMTP. For 5 users: €70 a month on Basic, €105 on Premium. All official modules are included, backups are daily, the data centers are in France, there's no commitment, and you only pay for active internal users. Trial: 30 days.

Self-hosted, upgrades run through the install page, which you can rerun safely, but some releases break third-party modules. A maintainer pointed out that a long-term support version, 18, is maintained until 2028.

Reviews keep landing on the same points: a dated interface, a steep learning curve and modules that are hard to find in the marketplace.

Krayin is built by India-based Webkul on Laravel, the most widely used PHP framework. It covers the basics: leads, contacts, deals, quotes, email and activities, free to self-host.

Its edge is the license. The repository is MIT, the most permissive on this list: you can modify it, embed it in a product and resell it without publishing changes. The vendor's site says AGPL; the repository file is what counts, but check it when you install.

For a business that just wants a CRM, it's a harder sell. It needs 3 GB of RAM, failed installs are its top two complaints, and the community is small, so there are fewer ready answers online.