Best Free & Open Source Alternatives to HubSpot

Krayin CRM is a fully open-source customer relationship management platform built on the Laravel framework. It provides a comprehensive suite of tools for managing leads, contacts, companies, and deals, making it suitable for both small businesses and larger enterprises.

Features include customizable pipelines, email integration, activity tracking, role-based access control, and multi-currency support. The platform is built with a modular architecture using Laravel and Vue.js, allowing developers to extend and customise functionality with ease.

Krayin can be self-hosted via Docker or a standard PHP server and supports full data sovereignty. It serves as a capable open-source alternative to commercial CRMs like HubSpot, Salesforce, and Zoho CRM, offering comparable pipeline management and contact tracking features without licensing costs.

Mautic is a powerful open-source marketing automation platform that gives businesses complete control over their marketing stack. It covers email campaigns, landing pages, contact segmentation, lead scoring, drip campaigns, social media integration, and detailed analytics — all in a single self-hosted package.

As a self-hosted alternative to HubSpot, Mailchimp, and Salesforce Marketing Cloud, Mautic enables teams to build sophisticated automation workflows without per-contact pricing or vendor lock-in. It supports multi-channel marketing including email, SMS, and push notifications, and integrates with popular CRM systems via plugins.

Built with PHP and deployable via Docker or traditional LAMP stacks, Mautic is battle-tested with a large community and a commercially backed foundation (Acquia). It is a strong choice for organisations handling sensitive contact data who need GDPR-compliant marketing automation under their own roof.

Dolibarr is a comprehensive open-source ERP and CRM platform that has been in active development since the early 2000s. It covers the full business lifecycle: contact and lead management, quotations, invoicing, order management, stock tracking, and project management — all in a single, modular web application.

The CRM component includes lead and opportunity tracking, contact history, email actions, and customer segmentation. Its modular architecture means you only activate the features you need, keeping the interface clean. It also supports REST APIs, a marketplace of community-contributed modules, and integrations with payment providers and shipping carriers.

Dolibarr is self-hostable on any LAMP/LEMP stack or via Docker and supports PostgreSQL and MySQL. It serves as a lightweight, all-in-one alternative to platforms like Salesforce, Zoho CRM, and HubSpot — particularly for SMEs and freelancers who want integrated ERP+CRM functionality without ongoing subscription costs.

EspoCRM is a free, open source Customer Relationship Management platform that gives businesses full control over their sales processes, contact management, and customer data. Built with PHP and JavaScript, it runs entirely on your own infrastructure, making it an ideal alternative to cloud-locked CRMs like Salesforce, HubSpot, and Zoho CRM.

Key features include contact, lead, account, and opportunity management, email integration with a built-in email client and marketing campaigns, kanban boards and activity streams for pipeline visibility, calendar, tasks, and meeting scheduling, and a customer portal for external stakeholder access. The platform is highly customizable with custom fields, layouts, and entity types, and exposes a REST API for third-party integrations.

EspoCRM supports self-hosting via Docker or traditional LAMP stacks, giving teams data sovereignty without vendor lock-in. Unlike Salesforce complex pricing tiers or HubSpots restrictive free plan, EspoCRM is fully functional at no cost. A cloud-hosted option is available for those who prefer a managed setup.

Frappe CRM is a modern, fully open-source CRM application built by the team behind ERPNext and the Frappe Framework. It is designed from the ground up to be fast, clean, and focused on the needs of sales teams — covering lead capture, contact management, deal pipelines, activity logging, and email integration.

The interface is built with Vue.js and provides a fluid, single-page experience with Kanban and list views for deal pipelines, an integrated telephony module, a notification system, and customizable views. As a standalone Frappe app, it can be installed independently or alongside ERPNext for a fully integrated ERP+CRM stack.

Frappe CRM is self-hostable via Docker or Frappe Bench and benefits from the same infrastructure used by thousands of ERPNext deployments worldwide. It positions itself as a lean, developer-friendly alternative to HubSpot CRM and Pipedrive — offering comparable pipeline management without per-user pricing or cloud lock-in.

Keila is an open-source newsletter and email marketing platform designed as a privacy-friendly alternative to proprietary tools like Mailchimp, Brevo, and ConvertKit. Built with Elixir and the Phoenix framework, Keila offers a robust and scalable solution for businesses and individuals looking to manage their email campaigns.

Relaticle is an open-source CRM platform built with Laravel and Filament, featuring native AI agent support through 30 MCP (Model Context Protocol) tools. It provides a modern, self-hosted alternative to proprietary CRMs with a clean UI and REST API for integrations.

Key features include contact and company management, sales pipeline tracking with opportunities, task management, team collaboration, and note-taking. The built-in AI agents can assist with data entry, lead scoring, and workflow automation directly within the CRM interface.

Designed for teams that want full control over their customer data, Relaticle can be self-hosted via Docker and offers a flexible architecture for custom integrations and extensions. Its progressive web app design ensures accessibility across devices while keeping all data on your own server.

Bytedesk is an open source, AI-powered customer engagement platform that combines a Slack-style team chat, a Zendesk-style ticket system, an Intercom-style live chat widget, and HubSpot-style CRM in a single self-hostable application.

It supports omnichannel customer interactions across website chat, email, WhatsApp, Telegram, and social channels, and ships with built-in AI agents, knowledge base search, and RAG-powered reply suggestions. The platform is built with Java, Spring Boot, and PostgreSQL, and exposes a comprehensive admin console for routing, automation, and analytics.

Released under AGPL-3.0, Bytedesk is a strong fit for small and mid-sized businesses that want to consolidate customer service, internal collaboration, and CRM tooling into a single, vendor-independent system they can run themselves.