Open Source Windows CRM Software
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CRM Software for Windows
View 574 business solutionsBrowse free open source CRM software and projects for Windows below. Use the toggles on the left to filter open source CRM software by OS, license, language, programming language, and project status.
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Paessler: Easy to Use With Enterprise Power. Free TrialYou shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.
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Host LLMs in Production With On-Demand GPUsDeploy your model, get an endpoint, pay only for compute time. No GPU provisioning or infrastructure management required.
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SuiteCRM
The multi-award winning SuiteCRM is the world's best open source CRM.
SuiteCRM, developed and maintained by SuiteCRM Ltd, is the world’s most popular open-source CRM solution. With nearly 2 million downloads and an estimated 5 million users globally, it is the go-to choice for businesses seeking flexibility without compromise. As a fully open-source platform, SuiteCRM allows organisations to scale and customise modules to fit their unique workflows. Whether deployed on-premise, as a SaaS solution, or in a private cloud, it ensures total data sovereignty and GDPR compliance. By delivering actionable insights across sales, marketing, and support, SuiteCRM empowers teams to turn data into growth and customer loyalty. -
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Dolibarr ERP - CRM
Open source ERP and CRM web software for business
Dolibarr ERP - CRM is an easy to use ERP and CRM open source software package (run with a web php server or as standalone software) for businesses, foundations or freelancers (prospect, invoicing, inventory, warehouse, order, shipment, POS, members for foundations, bank accounts...). Dolibarr is also available with auto-installers for users with no technical knowledge to install Dolibarr and all its prerequisites (Apache, Mysql, PHP) with just one package. Available platforms for such packages are: Windows, Debian, Ubuntu, Mint, Redhat, Fedora, OpenSuse, Mandriva, Mageia. Other platform can use the generic distribution. This is a modular product, than can be enhanced with tons of external modules (to provide you features not available by default) from https://www.dolistore.com Download Dolibarr ERP - CRM here or sign up for 15-day free trial of the cloud-based application with free updates and support at one of the Cloud providers https://saas.dolibarr.org/ -
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Vtiger CRM
An enterprise-class CRM and more!
Vtiger CRM enables sales, support, and marketing teams to organize and collaborate to measurably improve customer experiences and business outcomes. Vtiger CRM also includes email, inventory, project management, and other tools, providing a complete the business management suite. Download Vtiger CRM here or sign up for a free 15-day free trial of the cloud-based application with free updates and support at https://www.vtiger.com/ -
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phpList
Powerful Open Source Email Marketing app with analytics & segmentation
phpList delivers Open Source email marketing, including analytics, list segmentation, content personalisaton and bounce processing. Extensive technical features and a secure and stable codebase are the result of over 17 years of continuous development. Used in 95 countries, available in 20+ languages, and used to send 25 billion email campaigns last year. Deploy it with your own SMTP server, or get a free hosted account at http://phplist.com. -
$300 Free Credits to Build on Google CloudPut your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
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EspoCRM
EspoCRM – Open Source CRM Application
EspoCRM is a flexible, open-source Customer Relationship Management (CRM) platform that allows businesses to manage customer interactions, sales pipelines, marketing activities, and support processes. It is designed to be lightweight and user-friendly, with a modern web interface and strong customization capabilities. EspoCRM supports a wide range of modules and is suitable for small to medium-sized businesses looking for a self-hosted CRM solution that can be tailored to their needs. -
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Rukovoditel - Project Management/CRM
Free web-based open-source project management application
Rukovoditel is a free web-based open-source project management application. A far cry from traditional applications, Rukovoditel gives users a broader and extensive approach to project management. Its customization options allow users to create additional entities, modify and specify the relationship between them, and generate the necessary reports. The platform enables users to craft their own application that is specifically tailored for their activity (CRM, ERP, HRM, WMS, etc.). Rukovoditel can be implemented not only as a project management tool, but also as a CRM platform, or a combination of both. -
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SuiteCRM Translations
SuiteCRM Translations Language Packs
SuiteCRM, developed and maintained by SuiteCRM Ltd, is the world’s most popular open-source CRM solution. With nearly 2 million downloads and an estimated 5 million users globally, it is the go-to choice for businesses seeking flexibility without compromise. FAQ: Install a new language - https://docs.suitecrm.com/admin/installation-guide/languages/install-a-new-language/ Contribute Languagaes Translations - https://crowdin.com/project/suitecrmtranslations -
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PHP Address Book
Simple, web-based address & phone book
Simple, web-based address & phone book, contact manager, organizer. Groups, addresses, e-Mails, phone numbers & birthdays. vCards, LDIF, Excel, iPhone, Gmail & Google-Maps supported. PHP / MySQL based. -
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CiviCRM
Growing and Sustaining Relationships
CiviCRM is an open source and freely downloadable constituent relationship management solution for advocacy, non-profit and other organizations. Learn more at http://civicrm.org -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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Asterisk GUI client, VICIdial
VICIdial Contact Center Suite
This software suite is designed to extend the functionality of the Asterisk PBX through platform-independant web-client applications. Includes the VICIdial inbound/outbound contact center application. The suite is scalable across multiple Asterisk servers. -
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Group Office groupware and CRM
Take your office and CRM into the cloud!
Installation instructions can be found here: https://groupoffice.readthedocs.io/en/latest/install/install.html Group Office is an open source groupware application. It makes your daily office tasks easier. Share projects, calendars, files and e-mail online. It is a complete solution for all your online office needs. From a customer phone call to a project and finally an invoice. The support system helps to keep your customers happy. Group Office is fast, secure and has privacy by design. You can stay in full control of your data by self hosting your cloud and e-mail. Our document editing solution keeps all data on the secured server instead of synchronising it to all user devices. GroupOffice is open source and modular. Which means it’s easy to customise and extend. You can turn off and on features and it enables any developer to create new modules for the platform. -
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Zurmo Open Source CRM
Open Source CRM Application. Gamified, Mobile, Social
Open Source CRM application that is mobile, social, and gamified. Written in PHP utilizing jQuery, Yii Framework, and RedBeanPHP. We use a test-driven methodology for building every part of the application. This means you can create and maintain a custom-built Open Source CRM system with the assurance that future updates are not going to break your installation. (www.zurmo.org) -
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Relaticle
The Next-Generation Open-Source CRM Platform written with Laravel
Relaticle is a self-hosted knowledge graph and note linking platform designed to help users organize, connect, and explore ideas in a visual and intuitive way. It blends the simplicity of a note-taking system with the power of a graph database, allowing users to create nodes for concepts, link them through relationships, and navigate their thoughts like a map instead of a linear document. The interface lets you write plain text notes and tag or connect them dynamically, making it easier to uncover patterns and connections over time instead of losing insights in a long, unstructured list. Because it’s built with productivity and exploration in mind, Relaticle offers fast search, semantic context awareness, and the ability to zoom from high-level overviews down to specific node details. It also supports self-hosting so users retain full control over their data without relying on third-party servers or cloud subscriptions. -
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Invoice Plane
A self-hosted open source application for managing your invoices
InvoicePlane is an open-source invoicing and client management system designed for small businesses and freelancers. It enables users to create, send, and manage invoices and quotes efficiently. The system supports multiple languages, currencies, and tax rates, making it suitable for global use. InvoicePlane also provides detailed financial reporting and client management features. -
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Onfinity Open Source Manufacturing ERP
Free open source manufacturing ERP and CRM: BOM, MRP, stock, accounts
Onfinity (formerly VIENNA Advantage) is a free and open source ERP and CRM, built for manufacturers and used well beyond them. The community edition, Pluto, is the same code as the paid editions. No user limit, no time limit. Licence: EPL. In the package: accounts (ledger, receivables, payables, bank, budgets, several companies and currencies); purchase (requisition, RFQ, order, receipt, landed cost); sales and CRM (quotation to invoice, price lists, quantity discounts, leads); stock (warehouses, bins, batches with expiry, min/max, transfers); manufacturing (multi-level BOM, work orders, MRP, make to order); projects; HR (employees, leave, attendance). Low-code Application Dictionary, dashboards, mobile app, Onfinity Market. C#/.NET on IIS, HTML5 client, PostgreSQL 12+ or Oracle 12c+. Not in the free edition: hosting, support desk, payroll, country tax modules, AI assistant, DMS. Register free for manuals, videos, training and 30 days' support: login.onfinity.io/register.aspx -
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SuiteCRM
SuiteCRM - Open source CRM for the world
SuiteCRM is an open-source customer relationship management (CRM) software that serves as an alternative to proprietary CRM solutions. It offers a wide range of features for managing customer interactions, sales processes, and marketing campaigns. SuiteCRM is modular and highly customizable, making it suitable for businesses of all sizes looking to manage customer data efficiently. -
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Odoo
Open-source business management software
Odoo 18 is a comprehensive open-source business management software that offers a suite of integrated applications to streamline various organizational processes. Designed for flexibility and scalability, it provides tools for managing functions like sales, inventory, accounting, human resources, and customer relationships. Odoo's modular structure allows businesses to adopt only the features they need while maintaining the option to expand functionality as they grow. The open-source version is community-driven, making it cost-effective and continuously improving through global developer contributions. Its user-friendly interface and robust customization options make it a popular choice for small to medium-sized businesses seeking an adaptable and efficient ERP solution. -
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vtenext - Legacy Project vtenext, the open-source CRM and Business Process Management platform based on PHP 7, is being discontinued and replaced by vtezero, the next-generation AI-native platform built on PHP 8. The legacy vtenext source code will be removed from the public repository. This project page will remain available for informational purposes only. vtezero represents the evolution of the vtenext ecosystem, introducing AI agent governance, business process orchestration, enterprise integration, and human-in-the-loop supervision. For new projects, future development, and updates, please visit the new official GitHub project: https://github.com/vtezero Thank you to the vtenext community, developers, contributors, and partners for their support over the years. The future of vtenext continues with vtezero.
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Epesi BIM Free & Open Source CRM
Open-source CRM/ERP: contacts, calendar, email, tasks & file sharing
Epesi is an open-source CRM and a starting point for custom ERP systems. Built on Laravel 12, Filament 5 and Livewire. What you get: - CRM: Companies, Contacts, Phone Calls, Tasks and Meetings, with a calendar that merges events from every module. - Dashboard with applets: priority list, messages, reminders, sticky notes. - Attachments, watchdog (watch a record, get notified of changes), follow-ups, and e-mail with the Roundcube webmail built in. - Modules you install, enable and disable from the Administration panel, with no code deploy. - Languages: English, German, Spanish, French, Polish, Persian (Farsi), Hebrew, Arabic, Italian, Japanese, Portuguese (Brazil), Russian, Chinese (Simplified) - Calendars: Gregorian, Jalali, Hijri, Umm al-Qura Mobile friendly, light and dark mode. -
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Krayin CRM
Free & Opensource Laravel CRM solution for SMEs and Enterprises
Krayin CRM is a hand-tailored CRM framework built on some of the hottest open-source technologies such as Laravel (a PHP framework) and Vue.js a progressive Javascript framework. Free & Opensource Laravel CRM solution for SMEs and Enterprises for complete customer lifecycle management. We also have a forum for any type of concerns, feature requests, or discussions. Please visit: Krayin CRM Forums. -
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MYIT CRM
MYIT CRM is a total CRM project designed for Computer Servicing and Re
MYIT CRM is a total CRM project designed for Computer Servicing and Repairs.This project has Invoicing, Work Order management,Customers Details (CRM),Payment processing (Paypal, Paymate, etc),Job Scheduling and Calendar,PDF Invoices and lots more. -
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EspoCRM - Open Source CRM
Moving in the right direction together!
EspoCRM software is that it’s fully customizable. We strive to create a solution that fits different business and industry needs, without having to rely on a “one size fits all” approach or make you spend a fortune on customization. Demo: https://www.espocrm.com/demo/ Installation: https://docs.espocrm.com/administration/installation/ Customer relationship management (CRM) software is developing every day due to ever-changing global business environment and rapid advances in digitalization of the whole sales process. Being only a basic customer information database in the very beginning of its existence, CRM systems have evolved into something more than just sales software. Today, CRM is considered to be the entire approach to managing interaction with current and potential clients. The system fosters customer loyalty, automates the sales pipelines, streamlines business processes and provides powerful insights into sales performance. Apache / PHP / MySQL -
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]project-open[ - Project Server
Enterprise project management replacement for Project Server
]project-open[ is Web based enterprise project management application with a focus on finance and collaboration. It’s main purpose is to coordinate the work of project managers, project members and stake holders across multiple projects. Target organizations are companies or corporate departments that need to track finances, tasks, and resources for a large number of concurrently running projects. ]project-open[ consists of about 200 modules for resource management, time sheet management, HR, CRM, ITSM, collaboration and financials. ]po[ is built on top of OpenACS.org, an open-source Web platform featuring role-base permissions, workflows, dynamically extensible objects and full-text search. -
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Monica
Personal CRM. Remember everything about your friends, family, etc.
Monica helps you organize the social interactions with your loved ones. Can you remember the names of the children of all your friends? Can you remember the wedding anniversary of your brother? Can you tell the last time you called your grand mother and what you talked about? Monica lets you quickly and easily log all those information so you can be a better friend, family member or spouse. The more information you put in Monica, the easier it will be to remember everything. Monica provides an easy-to-use interface to store everything you know about your loved ones. Monica is for people who have jobs, a family, and are busy trying to find a good work/life balance. So busy, that they don’t have time anymore to remember to call a friend, say happy birthday to a nephew, or remember to invite someone special for dinner next week. The older we get, the more life gets in the way. It’s sad, but it’s the reality. -
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Twenty
Building a modern alternative to Salesforce, powered by the community
We’ve spent thousands of hours grappling with traditional CRMs like Pipedrive and Salesforce to align them with our business needs, only to end up frustrated — customizations are complex and the closed ecosystems of these platforms can feel restrictive. We felt the need for a CRM platform that empowers rather than constrains. We believe the next great CRM will come from the open-source community. We’ve packed Twenty with powerful features to give you full control and help you run your business efficiently. Contribute, self-host, fork. Break free from vendor lock-in and join us in shaping the open future of CRM. The days when the role of CRM platforms was to shift manual data entries to a database are over. Now, the data is already there. CRM 2.0 should be built around your data, allowing you to access and visualize any existing sources, not forcing you to retrofit your data into predefined objects on a remote cloud.
