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Open Source HubSpot Alternatives

A curated collection of the 11 best open source alternatives to HubSpot.

The best open source alternative to HubSpot is Odoo. If that does not suit you, we have compiled a ranked list of other open source HubSpot alternatives to help you find a suitable replacement.

HubSpot alternatives are mainly CRM Systems. Browse these if you want a narrower list of alternatives or are looking for a specific functionality of HubSpot.

Written by OpenAlternative Last updated: June 2, 2026
#1

Odoo

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

Integrated suite of business apps covering accounting, CRM, inventory, eCo...

#2

Twenty

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

Self-hostable CRM built for technical teams who need a fully customizable,...

#3

ERPNext

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

Open-source ERP solution offering modules for accounting, inventory, HR, C...

#4

Krayin

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

Open source customer relationship management platform with sales tracking,...

#5

Mautic

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

Mautic is a free and open source marketing automation platform that helps ...

#6

Erxes

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

All-in-one solution for marketing, sales, and customer service. Boost enga...

#7

Frappe CRM

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

A flexible and customizable CRM platform for managing contacts, deals, and...

#8

Ever Gauzy

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

All-in-one solution for ERP, CRM, HRM, ATS, and project management to stre...

#9

EspoCRM

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

Open-source CRM software for managing customers, companies, projects and o...

#10

Atomic CRM

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

Build a customizable CRM that matches your company's vision, designed for ...

#11

Relaticle

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

Transform customer relationships with this intuitive open-source CRM. Feat...