9 Best Open Source CRM of 2026

Twenty takes first place because it is the most customizable CRM on this list for the least setup effort. Every plan includes unlimited custom objects, fields, views and records, so a team can model deals, partners, renewals or anything else without paying for extra objects, and the Apps framework lets developers ship extensions in TypeScript. The interface offers Table, Kanban and Calendar views, unlimited dashboards and email and calendar sync with Google and Microsoft accounts. Developers get REST and GraphQL APIs, webhooks and an MCP server on every plan. You can self-host the open source core to keep data on your own infrastructure, or use Twenty Cloud, where Pro costs $9 per user a month billed yearly after a 30-day trial. The trade-offs are in governance: Pro only has Admin and Member roles, while custom permissions down to fields and rows, SAML or OIDC SSO and audit logs sit in the $39 Organization plan. Teams with strict access rules should budget for that tier.

SuiteCRM is the most complete free CRM on this list and ranks second because it covers sales, marketing and service with no per-user license at all. Sales teams get leads, opportunities and personalised quotations, marketers get segmentation and targeted campaigns, and service teams get case management, all in one AGPLv3 code base. An open REST API, an add-ons store and an Outlook plugin help it fit existing systems. The pricing page is clear that the software costs nothing: you pay only for hosting, setup and support if you want them. Self-hosted teams can rely on free community forums and documentation, while SuiteCRM Ltd sells fully managed hosting, a Quick Start implementation and support hours, plus SuiteASSURED with warranties and legal indemnities. The downsides are effort and currency. Your own team must handle updates and security when self-hosting, managed hosting requires a support contract, and those services are quoted in pounds sterling.

Frappe CRM ranks fourth and is the cheapest hosted option on this list. It is licensed under AGPL-3.0, so you can self-host it for free, and Frappe Cloud hosting starts at $5 a month per site with unlimited leads, deals, contacts and sales agents. Leads arrive from web forms, email, WhatsApp, Facebook lead ads and phone calls, and calls through Twilio or Exotel are logged with duration, notes and recordings. A built-in Enrich action fills in a company's industry, description and social links. Deals support products, forecasting, SLAs for first replies and multi-currency totals, and teams connected to ERPNext can create quotations straight from a deal. Customization covers custom fields, renamed stages and page layouts without code, and the Frappe Framework allows deeper development. It has fewer marketing and service features than SuiteCRM or Odoo, and the hosted bill depends on site size, provider and region.

Odoo CRM ranks third because it pairs a polished sales pipeline with the widest path to growth of any open source CRM here. Opportunities appear as cards on a Kanban pipeline with expected revenue per stage, incoming emails land in the pipeline automatically, and quotations come from the product catalog in a few clicks. Odoo also offers AI lead scoring and automated lead assignment. The CRM connects to Sales, Subscriptions, Email Marketing and Events apps, so a business can add modules over time. Odoo comes in two versions: Odoo Community, which is open source, and Odoo Enterprise, which is licensed, and you can switch at any time. On Odoo Online the CRM app alone is free with unlimited users. The catch is that paid plans bundle all apps per user, and Studio customization, multi-company and the external API require the Custom plan when Odoo hosts it. Our pricing check from Europe showed euros, so USD prices are pending.

EspoCRM ranks fifth as a lean, well-documented CRM that is easy to install. The core covers accounts, contacts, leads, opportunities and sales pipelines with a Kanban view, plus calls, meetings, tasks, dashboards and an activity stream. Email sync over IMAP links incoming messages to the right records, and shared calendars and a meeting scheduler with booking pages help teams coordinate. The code is licensed under AGPLv3, with a commercial license for companies that need non-copyleft terms. Self-hosting is simple: an install script or the official Docker image sets up EspoCRM with NGINX and MySQL, and it also supports MariaDB and PostgreSQL. The main caveat is that reports, BPMN 2.0 business processes and workflows come from the official Advanced Pack add-on, which is separate from the free core but included in every Cloud plan. EspoCRM Cloud requires at least 3 users on Basic and offers servers in the United States or Germany.

Krayin CRM ranks sixth and suits development teams more than end users who want everything out of the box. It is a free, open source, self-hosted CRM built on Laravel, so PHP developers can extend it with tools they already know. The core covers lead tracking, deal management, sales forecasting, activities, a product catalog, unlimited custom fields and role-based access control. Extra channels come as extensions: VoIP for inbound and outbound calls, WhatsApp messaging, Google contact and calendar sync, and a multi-tenant SaaS edition for agencies that want to resell a CRM. Teams that do not want to run servers can use Krayin's managed cloud, which starts at $20 a month with unlimited users and is priced per server rather than per seat, with up to about 15% off on annual billing. Out of the box it offers less for marketing and customer service than the suites ranked above it.

Vtiger ranks seventh. Its open source community edition is one of the longest-running self-hosted CRMs, with over 5 million downloads according to Vtiger, and release 8.4.0 moves it onto PHP 8.x for better security and speed. You can download it or run it with Docker and extend it as you like, and enterprises can buy VAssure for support, warranties and security on the open source build. Vtiger also sells Vtiger One cloud plans, which are a separate product with AI, help desk, marketing automation and project tools, and offers a free One Pilot cloud plan for up to 10 users and 3,000 records. That split is the main drawback: the most active development is in the cloud product, while the community edition is what you self-host. Vtiger's changes to the original SugarCRM code are under the Vtiger Public License 1.1. Paid cloud prices did not load in a form we could verify, so they are marked pending.

CiviCRM ranks eighth overall because it is built for a specific audience: nonprofits, NGOs and advocacy groups. For them it is often the strongest free choice. It tracks contacts, contributions, memberships and events, sends email campaigns, runs peer-to-peer fundraisers and handles case management, and CiviCRM says it is used by more than 14,000 nonprofits. The software is free to download, use and share under AGPL v3, and it can run standalone or inside WordPress, Drupal, Joomla or Backdrop. Organizations choose how to host it: on their own servers, through the CiviCRM Spark subscription, with a hosting provider or with a partner. CiviCRM is candid that self-hosting is for experts, and Spark is limited in integrations and customizations. For a company selling to other businesses, the lack of a classic deal pipeline makes other tools on this list a better fit.

Dolibarr ranks ninth as a CRM but stands out for small businesses that want sales, billing and stock in a single free tool. It is an ERP and CRM suite where you enable only the modules you need: prospects and customers, opportunities, proposals, sales orders, contracts, tickets and a knowledge base on the CRM side, plus billing, bank reconciliation, double-entry accounting, stock, purchasing and manufacturing. The code is free open source software under GPL version 3 or later, and the latest release is 24.0.3. Dolibarr runs on Windows, Mac, Linux and Docker, with auto-installer packages for less technical users, and the project says upgrades work from any older version without losing data. A low-code Module Builder and an API help with customization. Because it is primarily an ERP, its pipeline and email tools are simpler than dedicated CRMs, and extra features often come from paid third-party add-ons on Dolistore.