Open Source Windows Software

  • Gemini 3 and 200+ AI Models on One Platform Icon
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  • 1
    Apache OpenOffice

    Apache OpenOffice

    The free and Open Source productivity suite

    Free alternative for Office productivity tools: Apache OpenOffice - formerly known as OpenOffice.org - is an open-source office productivity software suite containing word processor, spreadsheet, presentation, graphics, formula editor, and database management applications. OpenOffice is available in many languages, works on all common computers, stores data in ODF - the international open standard format - and is able to read and write files in other formats, included the format used by the most common office suite packages. OpenOffice is also able to export files in PDF format. OpenOffice has supported extensions, in a similar manner to Mozilla Firefox, making easy to add new functionality to an existing OpenOffice installation.
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    Downloads: 234,833 This Week
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  • 2
    Bulk Crap Uninstaller

    Bulk Crap Uninstaller

    Remove large amounts of unwanted applications quickly.

    Bulk Crap Uninstaller (in short BCUninstaller or BCU) is a free (as in speech and beer) bulk program uninstaller with advanced automation. It excels at removing large amounts of applications with minimal to no user input, while requiring next to no technical knowledge. It can detect most applications and games (even portable or not registered), clean up leftovers, force uninstall, automatically uninstall according to premade lists, and much more. Bulk Crap Uninstaller is licensed under Apache 2.0 open source license, and can be used in both private and commercial settings for free and with no obligations, as long as no conditions of the license are broken.
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    Downloads: 8,918 This Week
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  • 3
    winPenPack

    winPenPack

    The portable software collection

    winPenPack is a project that aims at collecting the most frequently used and most popular open source applications made portable, so that they can be executed without installation from any USB Flash Drive or Hard Disk. The winPenPack suites offer a wide range of portable applications like office tools, internet tools, multimedia tools, development tools, security applications and other frequently used utilities. Everything you need, completely free, open source and portable!
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    Downloads: 501 This Week
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  • 4
    Mifos - Open Source Core Banking

    Mifos - Open Source Core Banking

    Democratizing Financial Services Worldwide

    The Mifos Stack provides API-driven core banking infrastructure in the cloud. Apache Fineract (https://github.com/apache/fineract/) is the back-end core banking platform originated by the Mifos Initiative. Mifos X acts as the reference web and mobile apps for staff and customers providing an out of the box ready-to-deploy solution on top of Apache Fineract along with reporting, payments orchestration and other ancillary solutions. More than 20 million customers are reached by 400+ institutions using the Mifos and Fineract APIs. The back-end has the customer management, wallet/account management, loan and deposit management, general ledger, and reporting services to provide a full range of digital financial services. These back-end services are exposed through a RESTful API allowing others to rapidly build new applications to serve the poor. This multi-tenant architecture is lightweight and ready for the cloud providing the extensibility and scalability for growth.
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    Downloads: 116 This Week
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  • 5
    Grafana

    Grafana

    Leading open-source visualization and observability platform

    Grafana OSS is the leading open-source platform for visualization and observability. It enables teams to query, visualize, alert on, and explore telemetry data from multiple sources in a single interface. With support for 100+ data source plugins—including Prometheus, Loki, Elasticsearch, InfluxDB, SQL/NoSQL databases, and OpenTelemetry—Grafana helps teams correlate metrics, logs, and traces across applications and infrastructure. Users can build interactive dashboards with rich visualizations, template variables, and reusable panels to monitor systems and troubleshoot issues in real time. Grafana includes capabilities such as ad hoc data exploration, alerting, annotations, and flexible query support. Its extensible plugin ecosystem integrates with cloud platforms, databases, and developer tools—allowing teams to build observability workflows without vendor lock-in. The easiest way to get started with Grafana is with Grafana Cloud, our fully managed, full-stack observability platform.
    Downloads: 18 This Week
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  • 6
    Q Light Controller Plus
    QLC+ is a fork of the great QLC project written by Heikki Junnila. This project aims to continue the development of QLC and to introduce new features. The primary goal is to bring QLC+ at the level of other lighting control commercial softwares. Please download the latest version from https://www.qlcplus.org.
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    Downloads: 70 This Week
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  • 7
    Makagiga

    Makagiga

    To-do manager, notepad, RSS reader...

    Makagiga is an open-source, easy-to-use, portable application for doing a variety of tasks, such as todo listing, text editing, or RSS reading. Plugins are used to implement its various capabilities.
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    Downloads: 22 This Week
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  • 8
    OpenGTS (Open Source GPS Tracking System) is a full featured web-based GPS tracking system for your fleet of vehicles. It supports OpenLayers and other map providers, detail/summary Reporting, and various GPS tracking devices.
    Downloads: 17 This Week
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  • 9
    JTrac

    JTrac

    Easy to set up bug tracking with Java

    JTrac is a generic issue-tracking web-application that can be easily customized by adding custom fields and drop-downs. Features include a customizable workflow, field level permissions, e-mail integration, file attachments, a detailed history view and changeable colors to fit a particular CI/CD. After a long hiatus, development has resumed with version 2.2.0 in December 2021, 2.2.1 in February 2022, 2.3.0 in February 2023, 2.3.1 in May 2023, 2.3.2 in July 2023 and 2.3.3 in June 2024. See https://sourceforge.net/p/j-trac/wiki/Home/ for release notes and documentation, and download it at https://sourceforge.net/projects/j-trac/files/jtrac/. Feedback is welcome. JTrac continues to be improved, and has recently been awarded the SourceForge "Open Source Excellence" badge.
    Downloads: 11 This Week
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  • 10
    Rolemaster Office
    PC and NPC character generator for Rolemaster RMFRP roleplaying system (from Iron Crown Enterprises). The program calculates all bonus and generates a nice PDF character sheet that contains additionally pages. The programm does not provide during-game support.
    Downloads: 13 This Week
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  • 11
    STD Foundation Classes

    STD Foundation Classes

    Object oriented frameworks - PowerBuilder, PowerServer & InfoMaker!

    by Chris Pollach (http://chrispollach.blogspot.ca) A fully integrated "object oriented" set of PB Classes for the following products: PowerBuilder, PowerClient & PowerServer. The framework greatly enhances the development process by making the PowerBuilder developer significantly more productive! License: https://sourceforge.net/projects/stdfndclass/files/License (Open Source) => Updated version of the STD "Integrated" framework 2025R1 build 2025.1.0.436 was released to production on 2025-06-09. https://sourceforge.net/projects/stdfndclass/files/FrameWork/Integrated => The STD "Web Service" framework 2022R2 build 2021.2.0.106 is the last release to production on 2021-05-12. This PB feature is now discontinued as of PB 2021 https://sourceforge.net/projects/stdfndclass/files/FrameWork/WebService => Updated version of the STD "Order Entry" example App 2025R1 build 2025.1.0.626 was released on 2025-05-29. https://sourceforge.net/projects/stdfndclass/files/Applications
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    Downloads: 28 This Week
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  • 12
    EZ Project

    EZ Project

    Softwares making our work easier

    Go to "Files" to download releases of EZComm and Jirrit. EZComm (EZ Comm) is still maintened, code hosted on https://github.com/bon-ami/ezcomm You can use it as either a client or a server for TCP/UDP text messages Jirrit is still maintened, code hosted on https://github.com/bon-ami/jirrit You can use it to operate with commands on JIRA, bugzilla, Jenkins and Gerrit. EZOutput is hosted on https://gitee.com/bon-ami/ezoutput
    Downloads: 33 This Week
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  • 13
    ABCD Community
    ABCD is a Free and Open Source Software designed to support knowledge communities. The software is targeting libraries of universities and research institutes as well as smaller public libraries, documentation centra, musea and archives.
    Downloads: 32 This Week
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  • 14

    Docear

    An Academic Literature Suite

    Docear (pronounced dog-ear) is what we call an “academic literature suite”. It integrates everything you need to search, organize and create academic literature in a single application: a digital library, reference manager, PDF and file manager, note taking and mind mapping. And the best: Docear works seemlessly with many existing tools like Mendeley, Microsoft Word, and Foxit Reader. Docear is free and open source, based on Freeplane, funded by the German Federal Ministry of Technology and developed by scientists from around the world, among others from OvGU, and the University of California, Berkeley.
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    Downloads: 6 This Week
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  • 15
    OpenUEM

    OpenUEM

    Manage your IT assets thanks to its agents and a clean and concise UI

    OpenUEM is an open-source inventory tool that allows you to manage your IT assets thanks to its agents and a clean and concise web user interface. OpenUEM is based on open-source or free tools that are battle-tested to avoid re-inventing the wheel. It allows you to keep track of your IT assets using agents installed on your Windows, Linux (Debian and RedHat based distributions) and MacOS endpoints and provides features like remote file browsing, getting Windows Update and Antivirus status, deploying software via WinGet/Flatpak/Brew, remote assistance with VNC or RDP… OpenUEM server components can be installed in a humble desktop machine with Windows 10 Home, Debian/Ubuntu Linux or any Docker powered environment. If you run a medium-sized or large company, you can use beefier machines and share the load as it has been designed to have distributed components. It can be classified too as a Remote Monitoring and Managing (RMM) or as a Unified Endpoint Management (UEM) tool.
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    Downloads: 26 This Week
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  • 16
    Position Sizer

    Position Sizer

    Risk-based position size calculation tool with extra features

    Position Sizer is a utility panel for MetaTrader 4 and MetaTrader 5 platforms that lets you easily calculate position sizes for trades based on risk tolerance, stop-loss, account size, and the current market conditions. It can be configured and customized in multiple ways: https://www.earnforex.com/metatrader-expert-advisors/Position-Sizer/
    Downloads: 21 This Week
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  • 17

    askimo

    AI desktop app with local RAG, privacy-first, multi-model support

    Askimo is an open-source, privacy-first AI desktop application designed to help users work with multiple AI models from a single, consistent interface. It supports popular AI providers such as OpenAI, Anthropic (Claude), Gemini, Ollama, LocalAI, Docker AI, LM Studio, and X AI, allowing users to switch models easily without vendor lock-in. A core feature of Askimo is Retrieval-Augmented Generation (RAG). Users can connect the app to local files, documents, and project folders so the AI can answer questions using their own knowledge base. All indexing, search, and history storage happen locally, ensuring sensitive data stays on the user’s machine. Askimo is built around project-based sessions, customizable conversation styles (directives), and searchable local history, making it well suited for document analysis, research, planning, and daily business workflows. The application runs on macOS, Windows, and Linux, with a strong focus on usability, performance, and transparency.
    Downloads: 21 This Week
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  • 18
    Mibew Messenger 3
    Mibew Messenger is an open-source live support application allowing visitors of your site to chat with your operators.
    Downloads: 16 This Week
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  • 19
    DreamStudio by Volocian Studios
    Volocian believes first and foremost that financial status shouldn’t be a barrier to entry in multimedia content creation. Whether you want to design a product or website, record a band, remix a song, or produce a feature length movie with professional post production graphics and effects, Volocian™ wants to help, even if you’re using borrowed hardware with no previous experience. We provide affordable products and services for any budget, including cost-free solutions for education and demo purposes, while everything we do is designed with ease of use and flexibility in mind, to suit everyone from novice hobbyists to expert professionals. Wherever possible, Volocian™ relies on free, open source, and cross-platform software to prevent vendor lock-in, planned obsolescence, and software as a service licensing. While we remain pragmatic about the use of proprietary software, as we’re aware of the feature limitations of some open source solutions, free solutions are preferred.
    Downloads: 4 This Week
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  • 20
    DCP Setup Maker

    DCP Setup Maker

    Powerful cross-platform install builder

    Great and powerful application to generate stable and multi-platform java installers. Watch a demo of DCP Setup Maker's installer being made in 2 minutes: https://www.youtube.com/watch?v=dmF5Kyla7Hg Its intuitive UI and exceptional ease of use makes it very easy to build complex installers with large amounts of files. The whole process is done step by step through a wizard-like interface, filling in fields and setting up files to finally build your package. *Required: Java 1.6+ Powered by Java, IzPack, Apache Pivot, Apache Ant, Nuget, launch4j and Stax. Source code migrated to https://github.com/DevComPack/setupmaker
    Downloads: 12 This Week
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  • 21
    Mibew Messenger 1.x
    "Mibew Messenger" - is unique software allowing visitors of your site to chat with your operators. This repo should be treated as an obsolete. For modern version of Mibew Messenger see https://sourceforge.net/projects/mibew/
    Downloads: 2 This Week
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  • 22
    Kwok Information Server
    Kwok Information Server is an open source IT management system, providing IT asset tracking (hardware inventory and software license), issue tracking (helpdesk), service contract management, vendor contact management, and knowledge base.
    Downloads: 2 This Week
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  • 23
    my PhotoDiary

    my PhotoDiary

    A Web application to publish, sort and comment your pictures.

    If you have lots of pictures stored on your computer drive and you want to sort, comment and publish them easily, my PhotoDiary will help you. My PhotoDiary is a Web application which allows to publish and securely share your pictures with your relatives and friends. It is multilingual and currently translated into English, Spanish and French. Your pictures and comments will be your family diary: you want to keep them safely for tens of years and even more: my PhotoDiary only uses sustainable IT technologies because we want our digital souvenirs to be long lasting and easy to migrate when IT technologies evolve. To try it, click on "Download" and go to...
    Downloads: 8 This Week
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  • 24
    winebox

    winebox

    Run Windows applications on any computer.

    WineBOX is an Open Source implementation of the Windows API and a program loader, allowing many unmodified Windows binaries to run on x86-based computers with out need a operative system.
    Downloads: 8 This Week
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  • 25
    MeanOS

    MeanOS

    The smallest and the most powerful operating system.

    The first decentralized, artificially intelligent, MEAN.js stack, operating system. Mean OS is the only operating system hosted anonymous using a P2P network and a suite of non-standard in-browser delivery mechanisms. Mean OS is specifically designed to support both Brave and Tor but is compatible with all other major browsers. Mean OS is Proud to be a BRAVE and TOR supporter, be free!!
    Downloads: 4 This Week
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