Open Source User Interface (UI) Software

Browse free open source User Interface (UI) software and projects below. Use the toggles on the left to filter open source User Interface (UI) software by OS, license, language, programming language, and project status.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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  • Photo and Video Editing APIs and SDKs Icon
    Photo and Video Editing APIs and SDKs

    Trusted by 150 million+ creators and businesses globally

    Unlock Picsart's full editing suite by embedding our Editor SDK directly into your platform. Offer your users the power of a full design suite without leaving your site.
    Learn More
  • 1
    EditBox

    EditBox

    EditBox is the Eclipse plugin for source code background highlighting.

    EditBox is the Eclipse plugin for source code background highlighting. While most of plugins highlight the syntax of the source code, EditBox highlights the selected block of the code by changing its background color and drawing border around it.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 2
    PhatStudio
    PhatStudio is a Visual Studio plugin which lets you quickly navigate to any file in your project in just a few keystrokes, even for very large projects.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 3
    JaeEditor 1.9.15 + FASM 1.71.22

    JaeEditor 1.9.15 + FASM 1.71.22

    Integrated Development Environment for Flat Assembler.

    JaeEditor is a Fasm IDE written using Microsoft Visual Studio 2012, WinAPI and Scintilla.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 4
    CODEIT-IDE

    CODEIT-IDE

    CODEIT is a simple IDE, You can handle Javascript, HTML, PHP , CSS, SQ

    CODEIT is a simple IDE to develop HTML5 applications directly online in Your browser (best use with Google Chrome). Thanks to the Codemirror library developed by Marijn Haverbeke (codemirror.net) and the initial founder XO Systems, we have created/updated our online IDE with everything you need for the development.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Deliver secure remote access with OpenVPN. Icon
    Deliver secure remote access with OpenVPN.

    Trusted by nearly 20,000 customers worldwide, and all major cloud providers.

    OpenVPN's products provide scalable, secure remote access — giving complete freedom to your employees to work outside the office while securely accessing SaaS, the internet, and company resources.
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