Welcome to the world of open source CRM and business management platforms that serve as powerful, flexible alternatives to HubSpot. These solutions put control back in your hands, avoid vendor lock-in, and foster community-driven innovation. Whether you need a modern CRM, an all-in-one ERP system, or a fully customizable customer experience platform, open source options are reshaping how organizations manage sales, customer data, and operations.
Twenty

Twenty challenges the status quo of expensive, restrictive CRMs by offering a sleek, fast, and open-source platform designed with modern user experience principles. Inspired by tools like Notion and Airtable, Twenty provides flexibility to adapt your customer data model and workflows. It’s more than just a CRM, it’s an operating system for customer data, allowing you to automate and customize deeply. The community actively shapes its future, and its GPL license means no hidden fees or vendor lock-in, while its open nature ensures better security through transparency.
Dolibarr

Dolibarr aims to simplify business management by bringing CRM, ERP, invoicing, inventory, HR, and more under one roof with a modular design. Its flexibility means you activate only what you need, avoiding clutter and complexity. Upgrades happen smoothly without downtime, and it supports a wide range of deployment options including cloud and on-premise. Dolibarr is highly customizable, with a marketplace full of modules and a low-code builder, supported by a global ecosystem that helps you tailor the software to your unique needs.
SuiteCRM

SuiteCRM is a mature, enterprise-grade CRM focused on empowering businesses to own and customize their customer data fully. It provides a unified platform that transforms fragmented information into actionable insights. Features like intelligent lead management, personalized communication automation, and service tools help you build meaningful customer relationships. SuiteCRM also offers SuiteASSURED, a program blending open source innovation with enterprise-level reliability, giving you confidence without compromise. Its vibrant community continuously improves security, usability, and features.
Erxes

erxes stands out as a self-hosted, scalable platform designed especially for SaaS companies and agencies wanting full control over their customer experience. Its plugin-based architecture enables complete customization, privacy, and unified management of all communication channels. erxes combines transparency with a sustainable business model, and its core operating system (XOS) plus marketplace plugins offer everything from sales pipeline visualization to multi-channel engagement, knowledgebase, and task management. This platform is about transforming everyday business interactions into meaningful connections, all while keeping your data secure and yours alone.
These open source alternatives provide robust, transparent, and customizable foundations for businesses looking to break free from proprietary constraints, tailor their software to their workflows, and engage their customers with tools built for the modern era.