Best Open-Source CRM for Companies Seeking Seamless ERP Integration

Fully‑featured fork of SugarCRM with ready‑made connectors for Odoo, Dolibarr, ERPNext and other ERP suites; supports bi‑directional data sync for contacts, invoices and inventory.

Lightweight, extensible CRM that ships with an ERP integration pack for Odoo, SAP Business One and Microsoft Dynamics; offers REST APIs for custom sync pipelines.

Open‑source CRM with built‑in modules for inventory, quotations and order management; includes connectors for Odoo, ERPNext and Dolibarr via the Vtiger‑Connector framework.

Non‑profit focused CRM that integrates tightly with Drupal, Joomla and WordPress; offers extensions for ERP systems such as CiviERP, Odoo and SAP for donor‑to‑finance workflows.

Feature‑rich CRM built on Vtiger core, providing out‑of‑the‑box ERP connectors for Odoo, Dolibarr and ERPNext; includes a visual workflow designer for custom data mapping.

Open‑source CRM with a strong focus on marketing automation; offers native integration modules for Odoo, SAP Business One and Microsoft Dynamics 365.

CRM module of the Odoo suite (GPL‑licensed) that works seamlessly with Odoo’s own ERP components; can also be decoupled and linked to external ERP via Odoo’s API.

CRM functionality baked into ERPNext (Frappe framework); provides a unified UI for leads, opportunities and sales orders, eliminating the need for separate integration.

Modular ERP/CRM system where the CRM module can be used standalone; includes ready connectors for external ERP tools and a robust API for custom sync.

Part of the Axelor Open‑Source ERP platform; the CRM module shares the same data model, enabling instant access to inventory, accounting and project data.

Enterprise‑grade CRM built on Symfony; provides integration bundles for Magento, SAP, Odoo and other ERP systems, plus a powerful data import/export engine.

Java‑based CRM with a strong emphasis on data integrity; includes connectors for SAP, Oracle ERP and Odoo, and offers a SOAP/REST API for custom ERP bridges.

Gamified open‑source CRM that provides an ERP integration plugin for Odoo and SAP; features a REST API and event‑driven sync for real‑time data consistency.

All‑in‑one groupware with CRM capabilities; includes built‑in ERP connectors for Odoo, Dolibarr and ERPNext, plus a flexible synchronization framework.

Modern low‑code CRM built on the Corteza platform; offers pre‑built ERP integration packs for Odoo, SAP Business One and Microsoft Dynamics.

Lightweight Ruby‑based CRM with a plugin ecosystem; community‑maintained adapters exist for Odoo, ERPNext and other ERP solutions.

Open‑source marketing automation platform with CRM features; includes integration extensions for Odoo, Dolibarr and ERPNext to align marketing leads with financial data.

While primarily an ERP, the community edition’s CRM module can be deployed independently and still retains full ERP‑level data sharing.

CiviCRM paired with the CiviERP extension provides a seamless bridge between constituent management and accounting/inventory modules.

A minimalistic PHP CRM that offers REST endpoints; community scripts enable synchronization with Odoo, ERPNext and other ERP platforms.

Separate open‑source package for EspoCRM that adds ready‑made connectors for Odoo, SAP Business One and Microsoft Dynamics, simplifying bi‑directional sync.

Open‑source add‑on for Vtiger CRM that provides out‑of‑the‑box integration with Odoo, Dolibarr and ERPNext, handling orders, invoices and stock levels.

A dedicated module that links YetiForce CRM with Odoo, SAP and Microsoft Dynamics, offering real‑time data mapping for contacts, products and financial documents.

Comprehensive suite of adapters for SAP, Oracle ERP Cloud and Odoo, enabling seamless transaction flow between CRM activities and back‑office processes.

Axelor’s open‑source platform merges CRM and ERP into a single data model; modules can be enabled/disabled, ensuring tight integration without middleware.

Provides out‑of‑the‑box connectors for Odoo, SAP and Microsoft Dynamics, plus a flexible data mapping UI for custom ERP integration scenarios.

Community‑maintained extension that syncs Zurmo leads, opportunities and accounts with Odoo and SAP Business One in near real‑time.

Offers built‑in synchronization services for Odoo, Dolibarr and ERPNext, covering contacts, calendars, tasks and financial records.

Low‑code integration pack that connects Crust CRM with Odoo, SAP and Microsoft Dynamics, featuring drag‑and‑drop mapping and webhook support.

Ruby gem that adds ERP connectivity to Fat Free CRM, supporting Odoo, ERPNext and custom ERP APIs via a unified interface.

Bundle of plugins enabling Mautic to push leads, campaigns and revenue data into Odoo, Dolibarr and ERPNext, keeping marketing and finance aligned.