Browse free open source CRM software and projects below. Use the toggles on the left to filter open source CRM software by OS, license, language, programming language, and project status.

  • Auth0 B2B Essentials: SSO, MFA, and RBAC Built In Icon
    Auth0 B2B Essentials: SSO, MFA, and RBAC Built In

    Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.

    Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.
    Sign Up Free
  • Catch Bugs Before Your Customers Do Icon
    Catch Bugs Before Your Customers Do

    Real-time error alerts, performance insights, and anomaly detection across your full stack. Free 30-day trial.

    Move from alert to fix before users notice. AppSignal monitors errors, performance bottlenecks, host health, and uptime—all from one dashboard. Instant notifications on deployments, anomaly triggers for memory spikes or error surges, and seamless log management. Works out of the box with Rails, Django, Express, Phoenix, Next.js, and dozens more. Starts at $23/month with no hidden fees.
    Try AppSignal Free
  • 1
    X2CRM

    X2CRM

    X2CRM - Workflow, Sales, Marketing, Workflow, Custom Apps, PHP, MySQL

    X2CRM Open Source Sales CRM: X2Engine, X2CRM is an Open Source PHP Customer Relationship Management, Sales, Contact Management, Customer Service and Marketing CRM software application. X2CRM helps you optimize your contacts to help you sell more and grow your business. Very powerful B2C and B2B sales management app. Build on top of the Yii framework. Supports all browsers, iPads, iPhones and most mobile devices. X2CRM Key Features Workflow Designer Mobile Apps Web and Facebook Lead Capture Forms Lead Nurturing, Scoring and Intelligent Routing Contact Activity Management Sales Process Work-flow Engine Email Correspondence Product and Sales Quotes User Profile Pages and Activity Streams Field Security, Roles and Sales Teams Visual Form Editor for Admins Reporting Dashboard iPad and Mobile Device Apps X2Studio, an administrative tool, allows developers to create and share new application modules without any programming knowledge.
    Downloads: 1 This Week
    Last Update:
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  • 2
    Freedom ERP

    Freedom ERP

    Software Livre para Gestão Empresarial

    É um software livre para Gestão Empresarial. Pode ser utilizado em estabelecimentos comerciais, varejistas, atacadistas e industriais. Dividido em vários módulos, atende a diversas necessidades de empresas em diferentes áreas de atuação.
    Downloads: 0 This Week
    Last Update:
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  • 3
    GO Gestionale Open - Open Source ERP

    GO Gestionale Open - Open Source ERP

    GO Gestionale Open: an Open Source ERP for your business

    GO Gestionale Open (GO Open ERP in english) is a completely free and open source ERP with more than 2000 installations in Italy. The program has an intuitive graphical interface and can manage multiple users and multiple enterprises. Companies can use it from sales to purchases, to manage the warehouse and the accounting. It also includes functions of activities planning, CRM and it can be used to exchange simple messages between users. You can download GO freely, and if you want you can subscribe an assistance contract with us.
    Downloads: 0 This Week
    Last Update:
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  • 4
    OpenEMM e-mail & marketing automation

    OpenEMM e-mail & marketing automation

    software for email automation (newsletters, transaction mails, etc.)

    This is an archive for old versions of OpenEMM. You will find the latest version of OpenEMM here: https://wiki.openemm.org OpenEMM is a browser-based enterprise application for email automation like info and marketing newsletters, transaction mails or multi-stage email campaigns. OpenEMM offers tons of features for professional users, among them: a great user interface, template-based HTML mailings, automatic bounce management, mail opening and link tracking, lots of graphical realtime statistics, a content management system, self-defined and behaviour-based target groups, a multi-queue mail backend for maximum sending performance, a time-driven automated data import and export feature, an extensive set of webservices, a plugin interface to easily extend the core functionality, a scripting feature to enhance the functionality of OpenEMM with triggerable customized actions and an audit-proof user activity log.
    Downloads: 0 This Week
    Last Update:
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  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
    Start Free
  • 5

    czela-netadmin

    Software developed for the purposes of czela.net o.s.

    Software developed for the purposes of czela.net - forum - membership database - accounting and inventory system - etc...
    Downloads: 0 This Week
    Last Update:
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