Open-source CRM software lets you run customer relationship management on your own servers, keeping contact data, sales pipelines and support history under your control. The strongest self-hosted options in the Stackora catalog range from developer-focused platforms to all-in-one business suites. This roundup covers each one, who it fits, and how to choose between them.

Options for technical teams and startups

Twenty

Twenty is an open-source CRM you can self-host and extend as code. It offers objects, views, workflows and AI agents built for technical teams. It has about 58,000 stars in the catalog, the highest of the group. Choose Twenty if your developers want to customize the data model and automate processes rather than adapt a fixed product.

Krayin CRM

Krayin CRM is a free, open-source CRM built with Laravel under the MIT license. It manages customers, leads and sales pipelines in one web application. Its permissive license and Laravel base make it a good fit for PHP teams that want a simple sales tool they can modify.

EspoCRM

EspoCRM is an open-source CRM web application under AGPL-3.0. It handles leads, contacts, sales opportunities, campaigns and support cases in a single interface. It suits small sales teams that want CRM and basic service tracking in one tool.

Options for growing businesses

Dolibarr

Dolibarr ERP & CRM is a PHP web application under GPL-3.0 for small and medium businesses. It manages contacts, invoices, orders, stock, accounting and HR. Pick Dolibarr when you need CRM tightly connected to billing and inventory rather than as a separate system.

ERPNext

ERPNext is a free, open-source ERP system under GPL-3.0 covering accounting, inventory, manufacturing, projects and HR. It is the right choice when CRM is one part of a broader operations platform, and your company needs manufacturing or project management alongside sales. It is built on the Frappe framework, which is itself an open-source low-code framework in Python and JavaScript for building business applications like ERPs, CRMs and CMSs. Frappe is relevant if your team plans to build custom business apps beyond ERPNext.

SuiteCRM

SuiteCRM is an open-source CRM under AGPL-3.0 for managing contacts, leads, accounts, opportunities and cases. Its feature set is broad, making it suitable for organizations with established sales and service processes that need a long-standing CRM model.

Options for customer support alongside CRM

If your main need is shared support rather than sales pipelines, consider these tools:

  • Chatwoot is a self-hosted customer support platform that unifies live chat, email and social channels in one inbox. It is positioned as an alternative to Intercom and Zendesk.
  • FreeScout is a self-hosted help desk and shared inbox under AGPL-3.0 that centralizes customer email, chat and social conversations.
  • UVdesk Community is a helpdesk and ticketing system built on Symfony under OSL-3.0, for support requests, agents and knowledge bases.

These tools complement a CRM. Many teams pair a sales CRM with a support inbox rather than forcing one product to do both well.

How to choose

Start with your team's size and technical capacity:

  • Developer-led startups that want to script their CRM should look at Twenty or Krayin CRM.
  • Small sales teams that want simplicity should look at EspoCRM.
  • Small and medium businesses that need invoicing and stock with CRM should look at Dolibarr.
  • Enterprises or manufacturers running operations on one platform should look at ERPNext, built on Frappe.
  • Organizations with established CRM processes may prefer SuiteCRM.

Check licenses before adopting. Licenses here include GPL-3.0, AGPL-3.0, MIT and OSL-3.0, and each sets different obligations if you modify and distribute the software. Review the terms with your legal team.

Also consider whether you need a standalone CRM or a full business suite. Standalone tools are simpler to run, while suites reduce integration work when finance, inventory and sales must share data.

Recommendation

For most technical startups, Twenty offers the most flexibility to shape a CRM around your workflows. For small and medium businesses that want CRM connected to accounting, Dolibarr is the practical choice. For enterprises that want one self-hosted system across operations, ERPNext is the strongest candidate. Pilot two options with real data before committing, and test how easily your team can maintain the installation.