Open Source Desktop Operating Systems User Interface (UI) Software

User Interface (UI) Software for Desktop Operating Systems

Browse free open source User Interface (UI) software and projects for Desktop Operating Systems 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.
    Start Free
  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
    Try it Free
  • 1
    A comprehensive software suite for reading barcodes. Supports EAN/UPC, Code 128, Code 39, Interleaved 2 of 5 and QR Code. Includes libraries and applications for decoding captured barcode images and using a video device (eg, webcam) as a barcode scanner.
    Leader badge
    Downloads: 1,054 This Week
    Last Update:
    See Project
  • 2
    [OFFICIAL] tinyfiledialogs C C++ v3.20

    [OFFICIAL] tinyfiledialogs C C++ v3.20

    inputbox password WIN OSX GTK QT Console VCPKG C# Lua R Fortran Pascal

    one C/C++ file & header provides 8 functions: - beep - tray notify popup - message & question - input & password - save file - open file(s) - select folder - color picker complements OpenGL Vulkan GLFW GLUT GLUI VTK SFML TGUI SDL Ogre Unity3d ION OpenCV CeGui MathGL GLM CPW GLOW Open3D ImGui MyGui GLT NGL STB Nuklear Fenster MicroUi & GUI-less programs NO INIT NO MAIN LOOP NO LINKING NO INCLUDE win (XP to 11) ASCII MBCS UTF-8 UTF-16 (wchar_t) - native dialogs osx/unix ASCII UTF-8 - applescript kdialog zenity … ° SSH console / X forwarding / waypipe Wayland ° the dialogs can be forced into console mode ° curses dialogs via Dialog.exe/Dialog (disabled by default) C89/C18 & C++98/C++23 compliant VisualStudio MinGW GCC Clang TinyCC IntelCC OWCC BCC SunCC on Windows Mac Linux Bsd Solaris Minix Raspbian Flatpak bindings: VCPKG C# R Lua Rust Haskell Java AllegroBasic Fortran Pascal D JavaScript Kotlin click tab 'Files' for prototypes
    Leader badge
    Downloads: 60 This Week
    Last Update:
    See Project
  • 3
    Eagle Mode

    Eagle Mode

    Zoomable user interface (ZUI) with file manager, file viewers and more

    Eagle Mode is a zoomable user interface (ZUI) with file manager, file viewers, games, and more. This project is about a futuristic style of human-computer interaction, where the user can visit almost everything simply by zooming in. It features a portable C++ toolkit API for developing such ZUIs, and it features the Eagle Mode application, which provides a virtual cosmos with plugin applications. The most important one is the professional file manager with its rich, scriptable command set. It integrates file viewers for most of the common file types, as well as an audio and video player. Furthermore, the virtual cosmos contains a chess game, a netwalk game, a 3D minesweeper game, a multi-function clock, a stock watchlist, some fractals, and a Linux kernel configurator in form of a kernel patch.
    Leader badge
    Downloads: 57 This Week
    Last Update:
    See Project
  • 4
    GNAVI: GNU Ada Visual Interface

    GNAVI: GNU Ada Visual Interface

    GNAVI: The GNU Ada Visual Interface.

    The GNAVI project provides GWindows, a Rapid Application Development framework for Graphical User Interfaces on MS Windows. The durable Open Source answer to Delphi and Visual Basic. Alire crate: https://alire.ada.dev/crates/gwindows Mirror: https://github.com/zertovitch/gwindows
    Leader badge
    Downloads: 17 This Week
    Last Update:
    See Project
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 5
    Win32::GUI is a Win32-platform native graphical user interface toolkit for perl. basically, it's an XS implementation of most of the functions found in user32.dll and gdi32.dll, with an object oriented perl interface and an event-based dialog model.
    Downloads: 9 This Week
    Last Update:
    See Project
  • 6
    GtkExtra is a useful set of widgets for creating GUI's for the Xwindows system using GTK+. You can use it complementary to GTK+ and it is written in C. It is also Free Software and released under the LGPL license.
    Downloads: 11 This Week
    Last Update:
    See Project
  • 7
    Qt Jambi

    Qt Jambi

    Qt bindings for Java developers

    Qt Jambi is the Qt library made available to Java. It is an open source technology aimed at all desktop programmers wanting to write rich GUI clients using the Java language, while at the same time taking advantage of Qt’s power and efficiency.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    Qoost is a collection of C++ classes and templates for programming Qt4. See our file releases for code and documentation.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 9
    This system provides printed and cursive handwriting recognition service as a shared library on GNU/Linux/Unix systems. Until someone writes another client, try the S/HIP: https://sourceforge.net/projects/ship-project/
    Leader badge
    Downloads: 1 This Week
    Last Update:
    See Project
  • Secure User Management, Made Simple | Frontegg Icon
    Secure User Management, Made Simple | Frontegg

    Get 7,500 MAUs, 50 tenants, and 5 SSOs free – integrated into your app with just a few lines of code.

    Frontegg powers modern businesses with a user management platform that’s fast to deploy and built to scale. Embed SSO, multi-tenancy, and a customer-facing admin portal using robust SDKs and APIs – no complex setup required. Designed for the Product-Led Growth era, it simplifies setup, secures your users, and frees your team to innovate. From startups to enterprises, Frontegg delivers enterprise-grade tools at zero cost to start. Kick off today.
    Start for Free
  • 10
    A library in C for DOS that allows you to create GUI windows and widgets using ASCII characters in text mode.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 11
    A small and easy to use framebuffer graphics library
    Downloads: 4 This Week
    Last Update:
    See Project
  • 12
    MUIBuilder is an GUI builder for MUI GUIs which was originally written by Eric Totel. Goal of this project is to make it portable for all AmigaOS-like operating systems, extend it to export data to XML, and create cross-platform code generator.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 13
    LCUI

    LCUI

    A small C library for building user interfaces with C, XML and CSS.

    LCUI is a freely available software library to create GUI application, it is written in C, support the use XML and CSS describe the graphical interface, you can use it to make some simple effects. The above description and screenshots is for the version 1.0.0 (+), and the 1.0.0 version is still in development, it is not officially released, please do not use old versions of "files "page to download as version 1.0.0.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 14
    Swing Class Library Este projeto reune classes e componentes Swing que procuram facilitar o desenvolvimento de aplicações Desktop em Java. This project brings together classes and Swing components that aim to facilitate the development of desktop applications in Java. Alguns Componentes/Some Components: -> BeanTablePanel, BeanTable e BeanTableModel -> MoneyField, NumberField, DateField, etc... -> DirectoryChooser, FileChooser -> Buttons -> FontComboBox, ImageComboBox, CheckedComboBox -> StatusBar -> I18N
    Downloads: 3 This Week
    Last Update:
    See Project
  • 15
    Cflow2vcg convert the result of the cflow utility in a VCG format. It offers the ability to view graphically the call-graph of sources, and import it in documentation.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 16
    Front end/Image manager for QEMU A nice boot menu/install program for QEMU disk images and guest operating systems.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    XUI is a Java and XML RIA platform for building smart app's. Swing, AWT and other widget sets can be used on a range of hardware. XUI's modular framework can help many aspects of application development. NetBeans and Eclipse are available.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 18

    Dwarf Music Porter

    A music porter to automatically create txt from mml.

    This program will port any and all SMWCentral *.mml files into fully working *.txt files ready to be inserted.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    ExGUI is short for Extended Graphical User Interface, and this is because the aim of this project is to increase the speed, usability, flexibility and intuitiveness of the common components of programs that a user may use.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    MUIBuilder is a user interface designer for the MUI and Zune toolkits. Goal of this project is to make it portable for all AmigaOS-like operating systems.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    To investigate, describe and develop methods and approaches to generating maps with computers. This is not another GIS project. This one is focused on how to develop programs which make useful end user maps and programs using map backgrounds.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    Mateusz's Saucy Editor

    Mateusz's Saucy Editor

    A simple console-mode text editor

    Mateusz's Saucy Editor (MSEDIT) is a simple editor working in the DOS environment. I decided to write it, because I had been using the Microsoft's EDIT editor for years, without finding any free alternative. Of course, there is plenty of free DOS editors out there, but no one has ever matched my expectations (or should I say, my taste). I guess that's because I had already been "formatted" by the MS editor :-) You will probably notice that MSEDIT is very similar to Microsoft's EDIT. That's a pure coincidence, and there is no connection at all between both of them.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    rngcc is "really nice GNU C compiler" it's the GUI for the standard GCC on Unix systems rngcc is fully written in c
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    wGui is a simple, platform independent dialog manager library using SDL and FreeType2. Written in C++ (with extensive use of the Standard Library and STL) the intention is to leave all of the antiquated C paradigms out of it (like #defines).
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    ACDK - Artefaktur Component Development Kit - is a platform independent C++-framework similar to Java or C#/.NET for generating distributed and scriptable components and applications.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • Next
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.