Alternatives / HubSpot
Looking for an open source HubSpot alternative? We compared 13 open source CRMs, marketing automation tools, and business suites by license, self-hosting, customization, AI features, and pricing. They range from modern customizable CRMs to a dedicated marketing automation platform and full ERP suites.
Written by Maxime DERAME
Last updated:
| Alternative | Best for | License |
|---|---|---|
| Twenty | Closest modern open-source CRM | AGPL-3.0 + commercial files |
| Mautic | Marketing automation and campaigns | GPL-3.0+ |
| Erxes | Marketing, sales, and support in one | AGPL-3.0 + EE |
| EspoCRM | Mature, proven CRM | AGPL-3.0 |
| Frappe CRM | Avoiding per-seat pricing | AGPL-3.0 |
| Krayin CRM | Sales tracking with marketing tools | MIT |
| CRM (trycompai) | AI agents that fill the CRM | MIT |
| Macro Docs | CRM with email, chat, and docs | AGPL-3.0 |
| Relaticle | AI agents and MCP tools | AGPL-3.0 |
| Odoo | ERP with CRM | LGPL-3.0 (Community) |
| ERPNext | Full open-source ERP | GPL-3.0 |
| Ever Gauzy | ERP, CRM, HR, and projects | AGPL-3.0 (Community Edition) |
| Atomic CRM | Building a custom CRM | MIT |
We looked for open-source tools that overlap with HubSpot's core: a CRM for contacts, companies, and deals, plus marketing automation and customer communication. We verified each project's license, recent activity, stars, and self-hosting in its repository. HubSpot bundles CRM, marketing, sales, and service hubs, so we separate focused CRMs from marketing automation and ERP suites, and flag open-core and commercially restricted licenses. See our methodology for the full criteria.
Mautic is a dedicated marketing automation platform with email campaigns, forms, and lead nurturing, but it is not a sales CRM. Twenty, CRM, Relaticle, Krayin, Frappe CRM, EspoCRM, and Macro are CRMs. Odoo, ERPNext, Erxes, and Ever Gauzy are broader business suites, and Atomic CRM is a developer toolkit. Teams often combine Mautic with a CRM to approach HubSpot's scope.
Erxes comes closest to HubSpot's bundled approach, unifying marketing, sales, and customer service, and Krayin combines sales tracking with marketing automation. Twenty is the closest modern CRM, with customizable data models, no-code workflows, and an MCP server, and Mautic covers the marketing hub.
Mautic is GPL-3.0 or later. Twenty is mostly AGPL-3.0, with some files under a commercial license. Odoo Community is LGPL-3.0, while Enterprise is proprietary. Erxes is AGPL-3.0 outside its enterprise directory and forbids offering it as a competing SaaS. ERPNext is GPL-3.0, Frappe CRM, EspoCRM, Relaticle, and Macro are AGPL-3.0, and CRM, Krayin, and Atomic CRM are MIT.
Marketing automation depends on reliable email sending. Self-hosting Mautic or any CRM that sends campaigns means configuring an SMTP provider or API such as Amazon SES, and managing sender reputation, bounces, and consent yourself.
All thirteen projects were updated within weeks of this update. Relaticle is young, so check its maturity before relying on it.
HubSpot is a proprietary platform with a free CRM and costly paid hubs priced per seat and per contact, with customer data stored in HubSpot's cloud. Open-source alternatives let you self-host customer data, avoid per-seat and contact-tier pricing, customize data models, and connect AI agents through APIs and MCP, at the cost of running the system and fewer built-in integrations.
| Alternative | Type | License | Self-hosted | Best for |
|---|---|---|---|---|
| CRM (trycompai) | AI CRM | MIT | Yes | Automatic record creation |
| Macro Docs | Collaborative CRM | AGPL-3.0 | Yes | Teams with email and docs |
| Odoo | ERP suite | LGPL-3.0 (Community) | Yes | Integrated business apps |
| Twenty | CRM | AGPL-3.0 + commercial files | Yes | Technical teams |
| ERPNext | ERP suite | GPL-3.0 | Yes | Comprehensive business management |
| Krayin CRM | CRM | MIT | Yes | Sales and marketing tools |
| Mautic | Marketing automation | GPL-3.0+ | Yes | Campaigns and lead nurturing |
| Ever Gauzy | Business platform | AGPL-3.0 (Community) | Yes | ERP, CRM, HR, and projects |
| Frappe CRM | CRM | AGPL-3.0 | Yes | No per-user fees |
| Erxes | Growth platform | AGPL-3.0 + EE | Yes | Marketing, sales, and support |
| EspoCRM | CRM | AGPL-3.0 | Yes | Mature CRM |
| Atomic CRM | CRM toolkit | MIT | Yes | Developers |
| Relaticle | AI CRM | AGPL-3.0 | Yes | Data control and MCP |
Want the closest modern open-source CRM
Twenty offers customizable data models, no-code workflows, role-based permissions, an API-first design, and an MCP server, with a paid cloud option.
Want marketing automation and email campaigns
Mautic manages leads, email marketing, forms, landing pages, and campaign automation, free to self-host under GPL-3.0.
Want marketing, sales, and support in one platform
Erxes unifies marketing, sales, and customer service with a 360-degree customer view and workflows, with enterprise features under a separate license.
Want sales tracking with marketing tools
Krayin offers lead and deal tracking, marketing automation, VoIP and live chat integrations, and analytics under MIT.
Want a proven, mature CRM
EspoCRM offers contacts, accounts, opportunities, pipelines, and workflows with self-hosted or cloud deployment.
Want AI agents to fill and enrich your CRM
CRM reads team inboxes to create contacts and companies, enriches them, and builds agents from plain-language descriptions.
Want a CRM that external AI agents can use
Relaticle has a built-in AI assistant, 37 MCP tools, a REST API, and custom fields, with no per-seat pricing.
Want a full ERP with CRM
ERPNext covers accounting, inventory, HR, CRM, manufacturing, and projects under GPL-3.0.