Open Source Windows Software Development Software

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

  • 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.

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  • 1
    Artistic Style
    A Free, Fast, and Small Automatic Formatter for C, C++, C++/CLI, Objective-C, C#, and Java Source Code. Website: http://astyle.sourceforge.net/ Git Repository: https://gitlab.com/saalen/astyle/
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    Downloads: 1,823 This Week
    Last Update:
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  • 2

    Process Manager for Windows (PMW)

    A easy to use task manager that lets you control your apps

    Process Manager for Windows is a smart Task Manager that lets you manage priority, transparency, visibility of your processes with few clicks. It lets you kill one process or all processes in with just shortcut key and let you gain control of your unresponding windows computer and let you regain all the resources back, of course when killing apps you always have the risk of losing the unsaved data. ================= This tool flourished from 2008 to 2013, and was downloaded over 200K times, However, it was decommissioned in 2013 by the sole developer Arif Ali Saiyed This tool was free with optional donations to milaap.org that raised about $1400 and just that small amount helped 15,372 needy people through microlending and created a new source of income stream for 3401 entrepreneurs. Check out the link below to see the impact you all made by donating. https://milaap.org/users/6877/impact
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    Downloads: 14 This Week
    Last Update:
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  • 3
    Easy Beginner's Environment in QT

    Easy Beginner's Environment in QT

    This is a port of the ebe programming environment to QT.

    The ebe programming environment is a nice IDE designed for developing Assembly programs. It also handles C and C++ programs as well since there was not much extra effort. It used to support Fortran and this could return if people want Fortran. This project is an effort to recode ebe using C++ and QT. Originally ebe was coded using Python, Tkinter and Pmw, which worked out pretty well. The QT environment offers substantially better GUI controls. The most obvious difference is that Python ebe has a lot of separate windows, while the QT ebe will use 1 main window and a collection of dockable subwindows. This will make it easier to use.
    Downloads: 3 This Week
    Last Update:
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  • 4
    WideStudio is an Integrated Development Environment (IDE) for building window applications in C++, Ruby, Python an Perl for Windows, MacOSX, Linux, FreeBSD, SOLARIS and other unix and BTRON and T-Engine. This is open and free (under MIT/X Consortiun Lice
    Downloads: 1 This Week
    Last Update:
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  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
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  • 5
    DocsGPT

    DocsGPT

    Private AI platform for agents, enterprise search and RAG pipelines

    DocsGPT is an open-source AI platform for deploying private RAG pipelines, AI agents, and enterprise search on your own infrastructure. Connect any data source (PDFs, DOCX, CSV, Excel, HTML, audio, GitHub, databases, URLs) and get accurate, hallucination-free answers with source citations. Choose your LLM: OpenAI, Anthropic, Google Gemini, or local models. Works with Qdrant, MongoDB, and Elasticsearch and more. Deploy via Docker or Kubernetes with full data sovereignty. Build embeddable chat and search widgets, automate multi-step workflows with AI agents, and integrate via Slack, Telegram, Discord, or REST API. Enterprise features include RBAC, 99.9% uptime SLA, and dedicated support. MIT licensed.
    Downloads: 0 This Week
    Last Update:
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  • 6
    Karesansui is an open-source virtualization management application made in Japan. It's smart graphical user interface lowers your management cost, and brings a total management/audit solution for both physical and virtual servers. Full featured RESTful interface allows customizing and integration with other management/billing systems.
    Downloads: 0 This Week
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  • 7
    Kerach Go

    Kerach Go

    A petite text shaderer whose entire code fits into a single html file

    A petite text shaderer whose entire code fits into a single html file. GitHub repository: https://github.com/Northstrix/kerach-go Link: https://northstrix.github.io/kerach-go/ The app is fully localized into: ✅ English ✅ Hebrew ✅ Italian ✅ Latin American Spanish ✅ Brazilian Portuguese ✅ Japanese ✅ Cantonese
    Downloads: 0 This Week
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  • 8
    Nof

    Nof

    A modern color palette generator

    A modern color palette generator that lets you effortlessly create a complete color palette from just one base color. Made using Firebase Studio, Next.js, and Perplexity. GitHub repository: https://github.com/Northstrix/nof Live app: https://nofpg.netlify.app/
    Downloads: 0 This Week
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  • 9
    PTLog focuses on pluggability of underlying logging frameworks, type-based categorization and some formatting utility on Logging. PTLog does not compete against any other logging frameworks, but can co-operate with them as abstraction layer on them.
    Downloads: 0 This Week
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    MongoDB Atlas runs apps anywhere

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  • 10
    PageMixer is one of the alternate ways of server side processing for presentation in web computing, instread of JSP and XMLC.
    Downloads: 0 This Week
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  • 11
    The name, "SASAX", is from "Simple API for SAX(Simple API for XML)". SASAX is the framework to parse XML document easily under SAX framework.
    Downloads: 0 This Week
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  • 12
    SVT (Struts Validation Toolkit) is a validation framework for Struts. You can write a simple validation code in Java. This will allow you to write more flexible rules, rather than writing validation.xml files.
    Downloads: 0 This Week
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  • 13
    ehandwriting

    ehandwriting

    Groundbreaking JS plug&play writes real handwriting on your web page.

    New and totally free handwriting software can write what you want, where you want, when you want on your web page in real time. The software is Vanilla JS only - no frameworks, CSS, images, svg, or video used or required. It's totally pure JS. It's for commercial, social media, and educational use. Creative web developers and designers have a new simple to use tool. The text on a web page usually has a few key words - the creative web developer will consider having one or more of them written dynamically in real time. Users are inevitably drawn to the hand that's writing. One line of code loads the plugin then any number of calls to it causes writing to happen when required. Typically the writing will occur in an element (a div, say) or a chosen area of the window. The software auto deals with font size and spacing. DOWNLOAD ehandwriting.zip (284kb) includes: - Executable software "ehw 1.1 min.js" (132kb) - All source files + documentation, - User guides - MIT Licence
    Downloads: 0 This Week
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  • 14
    i1n

    i1n

    Localization as code. One command to translate your app

    i1n is a localization platform for developers. A CLI pushes your translation keys and gets them back translated with AI, with variable protection and TypeScript type generation. Review and edit translations in the dashboard, mark them as manually approved, and get notified when source text changes make translations stale. Ships with an MCP server that connects to AI coding assistants (Cursor, Claude Code, Windsurf) so your agent can internationalize components directly from the IDE. Bridge Mode wraps existing i18next or next-intl setups with type safety, no migration needed. Open source CLI (MIT). Free tier is permanent.
    Downloads: 0 This Week
    Last Update:
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