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

55.6k stars8.7k forkslast commit Actively maintained
Bitrix24 is a cloud business platform offering CRM (contacts, leads, sales automation), project and task management, team chat and collaboration, telephony/contact-center features, and basic website/landing page tools for small and mid-sized organizations.
Twenty is an open-source CRM alternative to Salesforce with customizable data models, views, permissions, and workflow automation for sales and customer management.

55.6k stars8.7k forkslast commit Actively maintained
Open-source, self-hosted messaging platform for secure team collaboration with real-time chat, audio calls, screen sharing, and integrations.

38.9k stars8.9k forkslast commit Actively maintained
Huly is an open-source all-in-one platform combining project management, team chat, and collaborative documentation as an alternative to tools like Jira, Linear, Slack, and Notion.

27.5k stars2.1k forksEPL-2.0last commit Actively maintained
Open-source team chat server with topic-based threading for focused, asynchronous, and real-time communication in distributed teams.

25.8k stars10.1k forksApache-2.0last commit Actively maintained
Community-driven open-source CRM providing sales, marketing, service, reporting, workflow automation, REST API and on-premises or hosted deployment.

5.7k stars2.4k forksAGPL-3.0last commit Actively 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.

4.3k stars871 forksAGPL-3.0last commit Actively maintained
A PHP-based open-source CRM providing contacts, leads, pipelines, workflows, dashboards and extensible integrations for sales and support teams.

3.3k stars958 forksAGPL-3.0last commit Actively maintained
Open-source, self-hosted Work OS unifying project management, CRM, and agile workflows for startups.

1.3k stars96 forksMITlast commit Slowing 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 stars774 forksMITlast commit Actively maintained
Tracim is an open-source collaboration suite offering threaded conversations, file sharing with versioning, collaborative pages, tasks and workspace organization.

275 stars40 forkslast commit Actively maintained
ProjeQtOr is an open-source project management suite for planning, resource management, risks, costs, and project portfolio steering in a collaborative web app.
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Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 9 of 11 shipped a commit in the last six months. Licences in this list: EPL-2.0, Apache-2.0, AGPL-3.0, MIT. In exchange you take on hosting, backups and updates yourself.
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