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.

  • Award-Winning Medical Office Software Designed for Your Specialty Icon
    Award-Winning Medical Office Software Designed for Your Specialty

    Succeed and scale your practice with cloud-based, data-backed, AI-powered healthcare software.

    RXNT is an ambulatory healthcare technology pioneer that empowers medical practices and healthcare organizations to succeed and scale through innovative, data-backed, AI-powered software.
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  • Outbound sales software Icon
    Outbound sales software

    Unified cloud-based platform for dialing, emailing, appointment scheduling, lead management and much more.

    Adversus is an outbound dialing solution that helps you streamline your call strategies, automate manual processes, and provide valuable insights to improve your outbound workflows and efficiency.
    Learn More
  • 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: 41 This Week
    Last Update:
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  • 2
    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: 14 This Week
    Last Update:
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  • 3
    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: 7 This Week
    Last Update:
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  • 4
    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: 26 This Week
    Last Update:
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  • Rezku Point of Sale Icon
    Rezku Point of Sale

    Designed for Real-World Restaurant Operations

    Rezku is an all-inclusive ordering platform and management solution for all types of restaurant and bar concepts. You can now get a fully custom branded downloadable smartphone ordering app for your restaurant exclusively from Rezku.
    Learn More
  • 5
    Yjs

    Yjs

    Shared data types for building collaborative software

    Yjs is a high-performance, open-source CRDT (Conflict-free Replicated Data Type) implementation for building collaborative, real-time applications. It enables multiple users to edit shared data structures—such as text documents, arrays, maps, and XML trees—synchronously and offline. Yjs is network-agnostic and works with WebRTC, WebSocket, or any other transport layer, making it ideal for collaborative editors, whiteboards, and design tools. Its compact updates and powerful reconciliation system make it one of the most efficient and developer-friendly CRDT libraries available.
    Downloads: 5 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: 20 This Week
    Last Update:
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  • 7
    Cucumber.js

    Cucumber.js

    Cucumber for JavaScript

    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. Cucumber.js is the JavaScript implementation of Cucumber and runs on the maintained Node.js versions. 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. 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: 4 This Week
    Last Update:
    See Project
  • 8
    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: 16 This Week
    Last Update:
    See Project
  • 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: 3 This Week
    Last Update:
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  • Data management solutions for confident marketing Icon
    Data management solutions for confident marketing

    For companies wanting a complete Data Management solution that is native to Salesforce

    Verify, deduplicate, manipulate, and assign records automatically to keep your CRM data accurate, complete, and ready for business.
    Learn More
  • 10
    TREK

    TREK

    A self-hosted travel/trip planner with real-time collaboration

    TREK is a system designed to explore task execution, reasoning, or knowledge traversal in structured environments, likely focusing on guiding agents through complex multi-step processes. The project appears to emphasize traceability, allowing users to follow how decisions are made and how tasks progress through different stages. Its architecture suggests a focus on modular reasoning, where each step in a process is clearly defined and can be analyzed independently. This makes it particularly useful for debugging, experimentation, and understanding agent behavior in complex workflows. It may also include mechanisms for optimizing paths or improving decision-making efficiency over time. The system likely supports extensibility, enabling users to adapt it to different domains or problem types. Overall, TREK functions as a framework for structured exploration and execution in intelligent systems.
    Downloads: 3 This Week
    Last Update:
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  • 11
    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: 11 This Week
    Last Update:
    See Project
  • 12
    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: 2 This Week
    Last Update:
    See Project
  • 13
    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: 2 This Week
    Last Update:
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  • 14
    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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  • 15
    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: 4 This Week
    Last Update:
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  • 16
    MyCollab - Project Management Software

    MyCollab - Project Management Software

    task management, bug tracking, kanban, project management

    WE DISCONTINUE UPDATE THE PROJECT ON SOURCEFORGE SITES. FOR THE NEW RELEASE, VISIT https://community.mycollab.com. MyCollab is a free, open source collaboration platform management. It provides the comprehensive set features of Project Management, CRM, and Document Management. MyCollab is used very well in both traditional project management or Agile methodologies. It is the web-based application runs on Java platform and MySQL database. Its installation process is simple, and you do not need to edit configuration files manually as many other Java programs. MyCollab is the final choice of many organizations to find the best software for their usages. It covers all areas of project management; it's worth to try. Installation ======== * Download MyCollab binary - https://www.mycollab.com/self-hosted/ * Follow installation guideline at https://community.mycollab.com/docs/hosting-mycollab-on-your-own-server/installing-mycollab/
    Downloads: 4 This Week
    Last Update:
    See Project
  • 17
    Orangescrum

    Orangescrum

    Orangescrum Project Management Software

    Downloads: 7 This Week
    Last Update:
    See Project
  • 18
    Ganib | Project Management Software

    Ganib | Project Management Software

    Open Source, tasks, bug tracking, agile scrum, timesheet, wiki

    Ganib gives simpler ways to keep your projects organized and on track. Take advantage of easy features that help you quickstart and makes your team more efficient and productive. Open source Web based online agile project management collaboration software free, J2EE platform, MySql database with project dashboards & reporting. Organized Teams & Projects: Easily plan & manage projects with intuitive features to help your team deliver on time. Quickly focus on what's important, easily select actions to take. Be efficient for everyday work, project tasks, important details, and timelines. Tasks: Set milestones, tasks, subtasks with duration and dependencies to teams better organized. Scrum: Communicate effectively with your team using scrum, wikis & discussions to make better decisions. ​ Timesheet & Tracking: Track the time spent in real time using gTrack desktop tool with desktop screenshots. Bug Tracking: Manage bugs. Demo: http://www.ganib.com
    Downloads: 2 This Week
    Last Update:
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  • 19
    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: 6 This Week
    Last Update:
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  • 20
    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: 6 This Week
    Last Update:
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  • 21
    Application sharing software that allows individual windows to be replicated to other computers. Remote collaboration tool based on a modified VNC protocol. Its advantage is to keep some things, like email, private, while sharing other desktop apps.
    Downloads: 2 This Week
    Last Update:
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  • 22
    ConneX is a pure p2p collaboration platform based on JXTA technologie. its provides Real-Time collaboration tools in form of Plug-ins (instant messaging, file sharing, chat, whiteboard, slide show)100% Java.
    Downloads: 2 This Week
    Last Update:
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  • 23
    PfP LMS powered by Ilias (<a href="http://pfp.ethz.ch">http://pfp.ethz.ch</a>) has replaced PfP LMS (Prototype 2). The new PfP LMS's own internal collaboration tool was adopted replacing Sourceforge for PfP LMS collaboration. Refer to www.ilias.de.
    Downloads: 2 This Week
    Last Update:
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  • 24
    Coefficient is a project-based collaboration platform deployable as either a J2EE or a Web application. It provides collaboration tools as hot deployable modules. It also provides a workflow engine to help guide projects through their development cycle.
    Downloads: 1 This Week
    Last Update:
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  • 25
    SyncShare Server is a secure messaging and real-time collaboration platform. Build solutions to connect people, data, and applications through firewalls and mobile devices. It handles all networking, security issues and lets one focus on the business
    Downloads: 1 This Week
    Last Update:
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