Open Source Windows Collaboration Software

Collaboration Software for Windows

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Browse free open source Collaboration software and projects for Windows below. Use the toggles on the left to filter open source Collaboration 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
  • Ship Agents Faster Icon
    Ship Agents Faster

    Transform your applications and workflows into powerful agentic systems at global scale.

    Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
    Get Started Free
  • 1
    Openfire

    Openfire

    An XMPP server licensed under the Open Source Apache License

    Openfire is a real time collaboration (RTC) server licensed under the Open Source Apache License. It uses the only widely adopted open protocol for instant messaging, XMPP (also called Jabber). Openfire is incredibly easy to setup and administer, but offers rock-solid security and performance.
    Downloads: 16 This Week
    Last Update:
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  • 2
    CryptPad
    CryptPad is an open-source, end-to-end encrypted collaborative office suite developed by XWiki SAS. It offers a privacy-focused alternative to mainstream cloud-based productivity tools, enabling users to create, edit, and share documents securely without compromising data privacy. All content is encrypted client-side, ensuring that only authorized users can access the information. CryptPad supports various applications, including rich text documents, spreadsheets, presentations, code editing, kanban boards, polls, and whiteboards, facilitating real-time collaboration among teams. Users can access CryptPad without creating an account, and the platform also offers self-hosting options for organizations seeking full control over their data.
    Downloads: 8 This Week
    Last Update:
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  • 3
    Cucumber

    Cucumber

    Cucumber for Ruby

    It’s simple. Whether open source or commercial, our collaboration tools will boost your engineering team's performance by employing Behavior-Driven Development (BDD). And with our world-class training, take it to places it’s never been. Cucumber is a tool for running automated tests written in plain language. Because they're written in plain language, they can be read by anyone on your team. Because they can be read by anyone, you can use them to help improve communication, collaboration and trust on your team. This is the Ruby implementation of Cucumber. Cucumber is also available for JavaScript, Java, and a lot of other languages. Validate executable specifications against your code on any modern development stack. 40+ million open source downloads, the #1 tool for BDD. CucumberStudio is the leading collaboration platform for BDD - an easy-to-use tool to define ideas, test code, and learn in production from real-time insight.
    Downloads: 3 This Week
    Last Update:
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  • 4
    TWiki Enterprise Collaboration Platform

    TWiki Enterprise Collaboration Platform

    Open Source Enterprise Wiki and Web Application Platform

    Enterprise collaboration platform with over 400 extensions. Users without programming skills can create web applications. 50,000 small businesses, many Fortune 500 companies, and millions of people use TWiki, with installations of 100,000s of pages. Visit http://twiki.org/ for the open source TWiki. The TWiki community is focusing on building the best collaboration platform for the workplace. We invite you to GET INVOLVED! More at http://bit.ly/twGetInv.
    Downloads: 10 This Week
    Last Update:
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  • Atera - an All-in-one platform for IT management Icon
    Atera - an All-in-one platform for IT management

    Ideal for IT departments and MSPs (managed service providers)

    Your IT essentials, integrated & elevated. Take your IT management from automated to autonomous, download Atera's agent to start your free trial!
    Try Atera now
  • 5
    Collabtive

    Collabtive

    Collabtive is web based project management software. Simple and easy.

    Collabtive is web based collaboration software. It is an Open Source alternative for proprietary tools like Active Collab or Basecamp. Features include: Projects, Instant Messenger, Tasks, Files, Timetracking, Multilanguage, Basecamp import
    Downloads: 10 This Week
    Last Update:
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  • 6
    eXo Platform - Digital Workplace

    eXo Platform - Digital Workplace

    The open-source digital workplace for growing teams and enterprises.

    eXo Platform is an open-source digital workplace solutions for growing teams and enterprises, featuring: ✅ Internal Communications ✅ Team Collaboration ✅ Knowledge Management ✅ Productivity and Employee Recognition use cases. eXo stands out by: 👍 its fluid and integrated employe experience, on desktop and mobile 👍 the platform’s ease of use 👍 innovative employee engagement features. eXo Platform is developed on open-source technology and supports open standards. The platform is extensible and interoperable, all services are exposed REST APIs. The platform also offers additional security capabilities, developed in collaboration with highly sensitive clients. With eXo Platform, companies can connect, engage and reward their employees, customers, and partners with its social, engagement and gamification capabilities.
    Downloads: 6 This Week
    Last Update:
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  • 7
    Feng Office: Project Management and more
    Feng Office (formerly known as OpenGoo) is a free and open source online project management and collaboration tool, licensed under the Affero GPL 3 license.
    Downloads: 6 This Week
    Last Update:
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  • 8
    Fidus Writer

    Fidus Writer

    Fidus Writer is an online collaborative editor for academics

    Fidus Writer is an online collaborative editor especially made for academics who need to use citations and/or formulas. The editor focuses on the content rather than the layout, so that with the same text, you can later on publish it in multiple ways: On a website, as a printed book, or as an ebook. In each case, you can choose from a number of layouts that are adequate for the medium of choice.
    Downloads: 1 This Week
    Last Update:
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  • 9
    SparkleShare

    SparkleShare

    Share and collaborate by syncing with any Git repository

    SparkleShare creates a special folder on your computer. You can add remotely hosted folders (or "projects") to this folder. These projects will be automatically kept in sync with both the host and all of your peers when someone adds, removes or edits a file. SparkleShare was made to cover certain use cases, but doesn't handle every scenario well. SparkleShare uses the version control system Git under the hood, so setting up a host yourself is relatively easy. Using your own host gives you more privacy and control, as well as lots of cheap storage space and higher transfer speeds. The idea of SparkleShare sprouted at the GNOME Usability Hackfest in London, where a couple of designers came to the conclusion that they didn't have a good (Open Source) collaboration tool to share their work.
    Downloads: 1 This Week
    Last Update:
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  • $300 Free Credits for Your Google Cloud Projects Icon
    $300 Free Credits for Your Google Cloud Projects

    Start building on Google Cloud with $300 in free credits. No commitment, no credit card required until you're ready to scale.

    Launch your next project with $300 in free Google Cloud credits—no strings attached. Test, build, and deploy without risk. Use your credits across the entire Google Cloud platform to find what works best for your needs. After your credits are used, continue with always-free tier services. Only pay when you're ready to scale. Sign up in minutes and start exploring.
    Start Free Trial
  • 10
    Wireflow

    Wireflow

    User flow chart real-time collaborative tool

    Wireflow is an open-source collaborative tool for designing and visualizing user experience flows and wireframes directly in the browser, aimed at UX designers, product managers, and developers who need to map out interactive user journeys without heavy graphic design tools. Unlike static flowchart apps, Wireflow’s interface focuses on quick and intuitive creation of flow diagrams that represent screens and transitions, helping teams prototype and iterate on navigation logic and interaction sequences. It supports real-time collaboration, meaning multiple people can work on the same flow simultaneously, making it useful for distributed teams and remote workshops. Users can drag and drop nodes, connect steps with directed lines, and annotate interactions, producing a visual blueprint for app behavior, website navigation, or feature flows.
    Downloads: 1 This Week
    Last Update:
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  • 11
    mm-wiki

    mm-wiki

    Lightweight enterprise knowledge sharing and team collaboration

    MM-Wiki is a lightweight enterprise knowledge sharing and team collaboration software that can be used to quickly build an enterprise Wiki and team knowledge sharing platform. Easy to deploy and easy to use, it helps teams build a collaborative environment for information sharing and document management. It is easy to deploy, written based on golang, and you only need to download and execute the binary files under the platform. Quick Installer, provides a convenient installation interface program without any manual operation. An independent space. A space is a collection of documents, usually a company department or team. The documents in the space are independent of each other. Spaces can have space access levels set on demand. Perfect system authority management, the system can customize roles and grant different permissions for different roles. Integrated unified login, the system supports user authentication through external systems.
    Downloads: 1 This Week
    Last Update:
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  • 12
    Foswiki
    Foswiki is an Enterprise wiki, typically used to run a collaboration platform, knowledge base or document management system. Users can create wiki applications using the Topic Markup Language, and developers can extend its functionality with plugins. Foswiki stands for "Free and Open Source" wiki to emphasize its commitment to Open Source software.
    Downloads: 3 This Week
    Last Update:
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  • 13
    2-plan Team
    2-plan Team is an open-source project management and collaboration software. 2-plan Team is a fork of collabtive with features like gantt-chart, burn-down chart, API and mobile interface as well.
    Leader badge
    Downloads: 10 This Week
    Last Update:
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  • 14
    Kablink
    Kablink open team collaboration software uses social networking to unify team workspaces w/ real-time web conferencing. Collaboration for knowledge networking, program management, communities-of-practice, telework, other business process/functional areas
    Downloads: 1 This Week
    Last Update:
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  • 15

    Collabsuite

    Linux Mail Server with Calendaring and IM

    Collabsuite is an open source mail and collaboration software which is highly integrated and cost-effective. It provides comprehensive Linux mail server with calendaring and instant messaging functionality for enterprise. With all its high-end functionality, it is a great alternative to MS Exchange and other proprietary and expensive solutions. The Server is built on GNU/Linux Debian and makes use of various free software such as Postfix, Dovecot, Ejabberd, Darwin Calendarserver and SOGo. The Webclient is based on the popular Roundcube webmail software, while the Archiver is based on the open source edition of Mail Archiva and is bundled with the Dojo Toolkit for the Chat Archive Interface.
    Downloads: 1 This Week
    Last Update:
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  • 16
    Effectopedia
    Effectopedia is open knowledge aggregation and collaboration tool that provides a means of describing adverse outcome pathways in encyclopedic manner.
    Downloads: 1 This Week
    Last Update:
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  • 17
    Version Control for engineers

    Version Control for engineers

    Revision control for hardware, engineering and scientific projects

    Version Control for engineers (SVN edition) is a freeware Windows collaboration tool for engineers, scientist and designers. Version Control for engineers give you the file revision control for your hardware, engineering and scientific projects. Version Control for engineers is graphical user interface for SVN (Apache Subversion, http://subversion.apache.org/) version control system, special optimized for image, CAD/CAM files and technical visuals. Program supports the file, http and https connection to SVN repositories. Also see the Portable Edition https://sourceforge.net/projects/portable.postpdm.p/
    Downloads: 1 This Week
    Last Update:
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  • 18
    ATUIN (Atuin the unique innovation network) is a wiki-inspired collaboration platform for creating a problem-solution network written in PHP (implementing the Zend Framework) using XML/RDF files.
    Downloads: 0 This Week
    Last Update:
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  • 19
    Aqua Media Database (Aquamdb) is a social media collaboration tool. Right now it only supports collecting media (CDs and DVDs) and tagging them.
    Downloads: 0 This Week
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  • 20
    AsWiki is WikiWikiWeb clone (Wiki Engine) written in Ruby. WikiWikiWeb is web base collaboration tool. AsWiki provide web-site which anyone can create and edit page. It has features easy customize its publish html and RCS base version log.
    Downloads: 0 This Week
    Last Update:
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  • 21
    Asterisk PBX Integration Zimlet is an Extension for Zimbra Collaboration Suite. The Zimlet does Interface with the Asterisk Manager Interface to integrate with Asterisk PBX. The main focus is dial-on-click for Phone numbers inside Contacts and Emails.
    Downloads: 0 This Week
    Last Update:
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  • 22
    A multi-threaded network capable drawing and collaboration program. Multiple drawing clients can connect to a server, allowing users to collaborate on a single image over the internet. Git repository: http://github.com/skitzycat/beedraw/tree/master
    Downloads: 0 This Week
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  • 23
    A collaboration software that demonstrate MySql integration with C#.
    Downloads: 0 This Week
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  • 24
    Busca ativa - Cliente

    Busca ativa - Cliente

    Programa cliente para notificações de doenças de agravos.

    Sistema cliente. Deve ser instalado nos clientes do Busca ativa - Servidor (https://busca-ativa-servidor.sourceforge.io), ou seja, o Busca ativa - Cliente comunicará com o Busca ativa - Servidor. No intuito de concentrar as notificações de doenças de agravo em um determinado local central. Exemplo: Busca ativa - Cliente => Instalado em laboratórios de análise clínicas Busca ativa - Servidor => Instalado na Secretaria Municipal de Saúde.
    Downloads: 0 This Week
    Last Update:
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  • 25
    CCorpSoft Studio is a PHP based employee collaboration tool written from scratch. It includes a shared calander, shared contacts database, shared lead management database, RSS feed reader, search capabilities, and Email-like messaging.
    Downloads: 0 This Week
    Last Update:
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