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13 Best Open Source HubSpot Alternatives

A curated collection of the 13 best open source and self-hosted alternatives to HubSpot in 2026.

Looking for a free, privacy-friendly, or self-hosted replacement for HubSpot in 2026? The top open-source alternative is CRM — Open source CRM with AI agents that read your inbox, enrich contacts and companies, schedule follow-ups, and build new agents from plain-language descriptions..

Other highly rated open-source HubSpot alternatives include Macro CRM, Odoo and Twenty.

8,982

Open source CRM with AI agents that read your inbox, enrich contacts and companies, schedule follow-ups, and build new agents from plain-language descriptions.

CRM preview

Open source CRM with AI agents that read your inbox, enrich contacts and companies, schedule follow-ups, and build new agents from plain-language descriptions.

4,064

Automatically creates and enriches contacts, companies, and deal threads from your team's email. No data entry, no imports, no admin overhead.

Macro CRM preview

Automatically creates and enriches contacts, companies, and deal threads from your team's email. No data entry, no imports, no admin overhead.

53,981

Integrated suite of business apps covering accounting, CRM, inventory, eCommerce, HR, and project management, available free as Community or paid Enterprise edition.

Odoo preview

Integrated suite of business apps covering accounting, CRM, inventory, eCommerce, HR, and project management, available free as Community or paid Enterprise edition.

55,656

Self-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling.

Twenty preview

Self-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling.

38,560

Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.

ERPNext preview

Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.

23,733

Open source customer relationship management platform with sales tracking, marketing automation, and customizable workflows for businesses of all sizes.

Krayin preview

Open source customer relationship management platform with sales tracking, marketing automation, and customizable workflows for businesses of all sizes.

10,396

Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.

Mautic preview

Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.

3,403

A flexible and customizable CRM platform for managing contacts, deals, and customer relationships without the complexity or user-based pricing of traditional solutions.

Frappe CRM preview

A flexible and customizable CRM platform for managing contacts, deals, and customer relationships without the complexity or user-based pricing of traditional solutions.

4,349

All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations

Ever Gauzy preview

All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations

4,075

All-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.

Erxes preview

All-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.

3,299

Open-source CRM software for managing customers, companies, projects and opportunities. Intuitive interface with cloud and self-hosted options available.

EspoCRM preview

Open-source CRM software for managing customers, companies, projects and opportunities. Intuitive interface with cloud and self-hosted options available.

1,207

Build a customizable CRM that matches your company's vision, designed for developers and loved by end users.

Atomic CRM preview

Build a customizable CRM that matches your company's vision, designed for developers and loved by end users.

1,554

Transform customer relationships with this intuitive open-source CRM. Features task management, sales pipeline tracking, and customizable data models.

Relaticle preview

Transform customer relationships with this intuitive open-source CRM. Features task management, sales pipeline tracking, and customizable data models.

About HubSpot

A marketing, sales, and service platform that helps companies to attract visitors, convert leads, and close customers.