20 self-hosted Microsoft Dynamics 365 alternatives

Twenty is an open-source CRM alternative to Salesforce with customizable data models, views, permissions, and workflow automation for sales and customer management.

53.7k stars8.2k forkslast commit 27 Jul 2026Actively maintained

Odoo is a modular suite of web-based business apps, providing an open-source ERP with CRM, accounting, inventory, HR, eCommerce, website, and more.

53.3k stars33.2k forkslast commit 14 Jul 2026Actively maintained

Open-source ERP for SMBs with accounting, CRM, inventory, manufacturing, HR/payroll, projects, POS, and support in one integrated system.

37.3k stars12.2k forksGPL-3.0last commit 28 Jul 2026Actively maintained

Monica is an open-source personal CRM to manage contacts, track interactions, set reminders, and keep a private diary about your relationships.

24.9k stars2.6k forksAGPL-3.0last commit 30 Aug 2025Slowing down

Krayin CRM is an open-source, self-hosted customer relationship platform built on Laravel and Vue.js for sales pipelines, marketing automation, multi-channel support and extensibility.

23.5k stars1.5k forksMITlast commit 24 Jul 2026Actively maintained

Aureus ERP is an open-source, modular ERP platform built on Laravel for managing accounting, HR, CRM/sales, projects, inventory, and procurement.

11.6k stars509 forksMITlast commit 27 Jul 2026Actively maintained

Dolibarr is an open-source web-based ERP/CRM to manage sales, invoicing, purchases, inventory, accounting, HR, projects, and customer relationships.

7.5k stars3.5k forksGPL-3.0last commit 28 Jul 2026Actively maintained

Community-driven open-source CRM providing sales, marketing, service, reporting, workflow automation, REST API and on-premises or hosted deployment.

5.6k stars2.4k forksAGPL-3.0last commit 8 Jul 2026Actively maintained

Ever Gauzy is an open-source business management suite combining ERP, CRM, HRM/ATS, and project & time tracking with a web UI and headless APIs.

3.8k stars790 forksAGPL-3.0last commit 28 Jul 2026Actively maintained

A PHP-based open-source CRM providing contacts, leads, pipelines, workflows, dashboards and extensible integrations for sales and support teams.

3.2k stars910 forksAGPL-3.0last commit 25 Jul 2026Actively maintained

Corteza is an open-source low-code platform to build CRM-style apps, structured data systems, and automated business workflows with a strong API-first design.

2.1k stars506 forksApache-2.0last commit 8 Jun 2026Actively maintained

Next-generation open-source CRM for managing contacts, companies, tasks, and sales opportunities with a modern UI and customizable fields.

1.5k stars166 forksAGPL-3.0last commit 25 Jul 2026Actively maintained

Open-source, self-hosted Work OS unifying project management, CRM, and agile workflows for startups.

1.3k stars96 forksMITlast commit 28 Jul 2025Slowing down

Open-source CRM for contacts, deals, tasks, notes, and activity tracking, built with React and Supabase and designed to be customized by developers.

1.2k stars746 forksMITlast commit 27 Jul 2026Actively maintained

Apache OFBiz is a Java-based open-source ERP and e-commerce framework providing modular apps for accounting, CRM, order management, inventory and manufacturing, plus developer APIs.

1.1k stars704 forksApache-2.0last commit 24 Jul 2026Actively maintained

Django-CRM is a Django-based open-source CRM providing contact & lead management, deal tracking, email marketing, task/project management, and built-in analytics.

608 stars379 forksAGPL-3.0last commit 23 Jul 2026Actively maintained

Open source web-based double-entry accounting and ERP with invoicing, order processing, inventory, projects, and robust PostgreSQL-backed reporting.

555 stars167 forkslast commit 27 Jul 2026Actively maintained

Ruby on Rails app for managing food cooperatives: product catalog, online ordering, accounting, member and job scheduling.

353 stars159 forkslast commit 17 Jul 2026Actively maintained

PHP-based groupware and CRM for teams: calendars, contacts, email, file management, projects and CRM with CalDAV/CardDAV/IMAP support and extensible modules.

274 stars56 forksAGPL-3.0last commit 15 Jul 2026Actively maintained

Tryton is a modular, scalable open-source ERP platform covering accounting, sales, inventory, CRM, purchasing, manufacturing, projects, and subscriptions.

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