Best Open Source Customer Relationship Management Tools in 2026

Tools for managing customer relationships, sales pipelines, contacts, and business development activities.

The most popular pick this year is Twenty with 45,723 GitHub stars, but all 7 options below are worth considering depending on your needs.

7 open source customer relationship management tools — ranked by GitHub stars. Browse all

Twenty

A modern, open-source CRM built as a community-driven alternative to Salesforce.

Alternative to:

Salesforce

Monica

Personal CRM. Remember everything about your friends, family and business relationships.

Krayin CRM

A free and open-source Laravel CRM for SMEs and enterprises with full customer lifecycle management.

Alternative to:

HubSpot

Dolibarr

A free and open-source ERP and CRM platform for businesses, foundations, and freelancers of any size.

Alternative to:

Salesforce

SuiteCRM

A fully featured open-source enterprise CRM built as a community fork of SugarCRM.

Alternative to:

Salesforce

EspoCRM

Open source CRM platform for managing contacts, leads, sales pipelines, and customer relationships.

Alternative to:

Salesforce

Frappe CRM

A modern, open-source CRM by the Frappe team, built for sales teams to manage leads and deals efficiently.

Alternative to:

HubSpot

How we rank these tools

Tools are ranked by GitHub stars as a proxy for community adoption and trust. Stars reflect how many developers found a project valuable enough to bookmark — a reasonable signal for quality in the open source world. We only list tools that are actively maintained and open source.

Looking for tools you can run yourself? Browse self-hosted customer relationship management tools →