Dolibarr is an all‑in‑one open‑source ERP/CRM suite. If you are looking for other free, community‑driven CRM platforms that can be self‑hosted and customized, the list below provides twenty popular alternatives with a brief overview and a link to their project homepages.
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A fully‑featured fork of SugarCRM Community Edition, offering sales, marketing, and support automation with a large plugin ecosystem.
The open‑source part of Odoo provides a clean pipeline, lead scoring, and integration with Odoo’s other modules (e.g., invoicing).
An ERP suite with a native CRM module for lead capture, pipeline management, and email integration.
A mature, PHP‑based CRM offering sales automation, ticketing, and marketing tools; community edition is open source.
Lightweight, modern CRM built on PHP/Laravel, supporting custom entities, dashboards, and REST API.
Feature‑rich CRM derived from Vtiger, with advanced workflow, AI‑assisted suggestions, and GDPR‑ready data handling.
Non‑profit focused CRM that integrates with Drupal, Joomla and WordPress for constituent management and fundraising.
Gamified CRM built on Yii framework, emphasizing user engagement and easy customization.
A minimalistic Ruby on Rails CRM that provides contacts, leads, and activity tracking with a clean UI.
A powerful, modular CRM with marketing automation, workflow designer, and extensive API support.
Formerly Crust CRM, an open‑source low‑code platform for sales pipelines, case management, and custom apps.
Enterprise‑grade Java‑based CRM offering multi‑tenant architecture, extensive data model, and robust security.
Part of the Axelor ERP suite; provides lead management, opportunity tracking, and seamless integration with accounting.
Community‑driven ERP/CRM platform (fork of ADempiere) with flexible workflow, multi‑currency, and extensive plugin system.
Open‑source ERP that includes a CRM module for contact management, opportunity tracking, and sales analytics.
Modern ERP/CRM built on Java/Spring, offering lead management, activity streams, and real‑time dashboards.
A mature Java‑based ERP/CRM solution with strong accounting integration and customizable business processes.
A comprehensive open‑source ERP that includes a CRM component for contact, lead, and opportunity management.
Open‑source CRM focused on e‑commerce and B2B, featuring segmentation, marketing automation, and robust API.
Groupware suite with an integrated CRM module, offering contact, lead, and case management alongside calendar and mail.