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

  • Deploy Apps in Seconds with Cloud Run Icon
    Deploy Apps in Seconds with Cloud Run

    Host and run your applications without the need to manage infrastructure. Scales up from and down to zero automatically.

    Cloud Run is the fastest way to deploy containerized apps. Push your code in Go, Python, Node.js, Java, or any language and Cloud Run builds and deploys it automatically. Get fast autoscaling, pay only when your code runs, and skip the infrastructure headaches. Two million requests free per month. And new customers get $300 in free credit.
    Try Cloud Run Free
  • Ship AI Apps Faster with Vertex AI Icon
    Ship AI Apps Faster with Vertex AI

    Go from idea to deployed AI app without managing infrastructure. Vertex AI offers one platform for the entire AI development lifecycle.

    Ship AI apps and features faster with Vertex AI—your end-to-end AI platform. Access Gemini 3 and 200+ foundation models, fine-tune for your needs, and deploy with enterprise-grade MLOps. Build chatbots, agents, or custom models. New customers get $300 in free credit.
    Try Vertex AI Free
  • 1
    Notepad++

    Notepad++

    Free, open-source text editor

    Notepad++ is a source code editor that is free to use and is available in various languages. The source code editor is also written in C++ and is based on the Scintilla editing component. Notepad++ offers a wide range of features, such as autosaving, line bookmarking, simultaneous editing, tabbed document interface, and many more features. Over 140 plugins are also available to use in the default program. Notepad++ takes advantage of higher execution speed and smaller program size by using Win32 API and STL. The ability to optimize efficiency without sacrificing user-friendliness results in an environment-friendly technology that reduces carbon dioxide emissions. Ultimately, the reduction in power consumption is much better for the environment while still being a viable option for businesses. If you like this project consider donating. https://notepad-plus-plus.org/donate/
    Downloads: 2,381 This Week
    Last Update:
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  • 2
    jEdit

    jEdit

    jEdit is a programmer's text editor written in Java.

    jEdit is a programmer's text editor written in Java. It uses the Swing toolkit for the GUI and can be configured as a rather powerful IDE through the use of its plugin architecture.
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    Downloads: 490 This Week
    Last Update:
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  • 3
    Visual Studio Code

    Visual Studio Code

    Modern IDE and code editor from Microsoft for Mac, Windows, and Linux

    Visual Studio Code combines the simplicity of a code editor with what developers need for their core edit-build-debug cycle. It provides comprehensive code editing, navigation, and understanding support along with lightweight debugging, a rich extensibility model, and lightweight integration with existing tools. Visual Studio Code is a distribution of the Code - OSS repository with Microsoft-specific customizations released under a traditional Microsoft product license. Visual Studio Code is updated monthly with new features and bug fixes. You can download it for Windows, macOS, and Linux on Visual Studio Code's website. To get the latest releases every day, install the Insiders build. Debug code right from the editor. Launch or attach to your running apps and debug with break points, call stacks, and an interactive console. Working with Git and other SCM providers has never been easier. Review diffs, stage files, and make commits right from the editor.
    Downloads: 95 This Week
    Last Update:
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  • 4
    Atom

    Atom

    A hackable text editor for the 21st Century

    Atom is a text editor that's modern, approachable and full-featured. It's also easily customizable- you can customize it to do anything and be able to use it productively without ever touching a config file. Atom is free to download and runs on Linux, OS X and Windows with support for plug-ins written in Node.js and embedded Git Control. It is based on Electron (formerly known as Atom Shell),a framework for building cross-platform apps using Chromium and Node.js.
    Downloads: 92 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.
    Try Retool free
  • 5
    Brackets

    Brackets

    A modern, lightweight yet powerful text editor

    Brackets is a free, modern open-source text editor made especially for Web Development. Written in HTML, CSS, and JavaScript with focused visual tools and preprocessor support, Brackets makes it easy for web designers and front-end developers to design in the browser. Its blend of visual tools ensures you get just the right amount of help when you want it without disrupting your creative process. It's the better, easier and more enjoyable way of writing code.
    Downloads: 64 This Week
    Last Update:
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  • 6
    PSPad

    PSPad

    Text and code editor

    PSPad editor is a programmers editor with support for multiple syntax highlighting profiles. It comes with a hex editor, CP conversion, text differences, templates, macros, spellcheck option, auto-completion, Code Explorer and much more. The program is pre-configured for the most popular programming languages (VB, C++, SQL, PHP, ASP, Python etc.) and you can further customize the syntax settings. PSPad includes several additional tools that are especially useful for HTML editing (compress, format code) and also integrates TopStyle Lite and TidyHTML. The program can be used as IDE for any compiler. Additional features include support for project, file browsing, custom shortcuts, built-in FTP client to edit files on the server and much more.
    Downloads: 190 This Week
    Last Update:
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  • 7
    CodeFlask

    CodeFlask

    A micro code-editor for awesome web pages

    A micro code-editor for awesome web pages. This API is simply a proxy to add a new language to Prism itself (the code highlighter). The options parameter must be the same accepted in Prism. By default, CodeFlask comes with a simple theme made from scratch called CodeNoon. You can easily override this theme with your own by writing your own CSS and adding it to your project. If that's the case, you should also disable CodeNoon with the defaultTheme option.
    Downloads: 0 This Week
    Last Update:
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  • 8
    WideW - WebIDEWeb

    WideW - WebIDEWeb

    Web IDE in single HTML file

    IDE written in a single HTML file that runs on the browser tab. There is no need to install, download a single file and run anywhere. To change the initial configuration, edit the widew.html file in the last lines. * Widew use CodeMirror components in code editor. URLs: https://soluc.org/widew https://widew.sourceforge.io
    Downloads: 0 This Week
    Last Update:
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