Open Source User Interface (UI) Software
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User Interface (UI) Software
View 125 business solutionsBrowse 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.
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DxWnd
Window hooker to run fullscreen programs in window and much more...
Windows hooker - intercepts system calls to make Win32 programs run in a window, to enhance application compatibility, to enhance video modes, to stretch timing and emulate CD disk data and audio tracks. It is typically very useful to run old Windows games. -
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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.
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FigCraft
FigCraft: interface design and prototyping
FigCraft is a free, open-source interface design and prototyping application that provides an alternative to Figma for creating user interfaces, interactive prototypes, and design systems. Built entirely in Rust, FigCraft delivers a fast, native design environment with support for vector editing, auto layout, reusable components, and advanced styling tools. Users can create responsive layouts, manage design variables, build component libraries, and develop interactive prototypes with transitions and conditional interactions. The software includes advanced vector drawing capabilities, typography controls, gradients, effects, and export options for SVG, PNG, JPG, WebP, and PDF files. FigCraft also supports AI-powered design automation through its Model Context Protocol (MCP) server, command-line interface, and scripting capabilities, allowing AI agents to create and modify designs. Available for Windows, macOS, Linux, FreeBSD, and web browsers. -
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Pencil
The Pencil Project's unique mission is to build a free tool
Pencil is built for the purpose of providing a free and open-source GUI prototyping tool that people can easily install and use to create mockups in popular desktop platforms. The latest stable version of Pencil is 3.1.0 which contains stability fixes and many new features. More details can befound in the releaste notes. Pencil provides various built-in shapes collection for drawing different types of user interface ranging from desktop to mobile platforms. Starting from 2.0.2, Pencil is shipped with Android and iOS UI stencils pre-installed. This makes it even easier to start protyping apps with a simple installation. Starting from 2.0.2 Pencil has even more shape collections included by default. The list of built-in collections now includes general-purpose shapes, flowchart elements, desktop/web UI shapes, Android and iOS GUI shapes. -
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LVGL
Powerful and easy-to-use embedded GUI library with many widgets
Powerful and easy-to-use embedded GUI library with many widgets, advanced visual effects (opacity, antialiasing, animations), and low memory requirements (16K RAM, 64K Flash). LVGL provides everything you need to create an embedded GUI with easy-to-use graphical elements, beautiful visual effects, and a low memory footprint. LVGL is an open-source graphics library providing everything you need to create an embedded GUI with easy-to-use graphical elements, beautiful visual effects, and a low memory footprint. Create stunning user interfaces with LVGL! Take advantage of its platform-independent nature and use one library with small microcontrollers or high-end processors. The LVGL is a lightweight embedded library for displays and touchscreens providing everything required to build fully featured-embedded GUIs. Do you like Python? Create your UI in MicroPython with LVGL. -
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JFreeChart is a free (LGPL) chart library for the Java(tm) platform. It supports bar charts, pie charts, line charts, time series charts, scatter plots, histograms, simple Gantt charts, Pareto charts, bubble plots, dials, thermometers and more. *** JFreeChart has moved to GitHub: https://github.com/jfree/jfreechart ***
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tkImg
Img is a collection of format handlers for the Tk photo image type.
See https://tkimg.sourceforge.net/ for a list of supported image formats. -
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Colora - Color Picker
Color converter, screen color picker and color palettes for Windows
Colora is a useful small color converter and screen color picker tool for Windows. Colora makes it easy to pick colors from screen and save them. The color picker is tested to work with Windows 10 and DPI scaling. Picked colors can be configured and converted between various formats such as RGB, Hex, HSB, HSL and CMYK. The integrated palette tool then allows you to create color palettes from selected colors or the history of picked colors. Support: https://sourceforge.net/p/colora/discussion/ https://github.com/bluegrams/colora/issues -
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WOW.js
Reveal CSS animation as you scroll down a page
Reveal animations when you scroll. Easily customize animation settings like style, delay, length, offset, iterations, etc. By default, you can use it to trigger animate.css animations. But you can easily change the settings to your favorite animation library. Smaller than other JavaScript parallax plugins, like Scrollorama (they do fantastic things, but can be too heavy for simple needs). Super simple to install, and works with animate.css, so if you already use it, that will be very fast to setup. Fast execution and lightweight code, the browser will like it. It just take seconds to install and use WOW.js! Once purchased on UpLabs, you’ll receive a commercial license PDF and be all set to use WOW.js in your commercial applications. If you want to use WOW.js to develop commercial sites, themes, projects, and applications, the Commercial license is the appropriate license. With this option, your source code is kept proprietary. -
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AntTweakBar
C/C++ library to add light and intuitive GUI to OpenGL and DX programs
AntTweakBar is a small and easy to use C/C++ library that allows programmers to quickly add a light and intuitive GUI into OpenGL or DirectX based programs to interactively tweak parameters on-screen. AntTweakBar works with Linux, Windows and OSX, and can be easily integrated with custom windowing system or with existing toolkits. Examples of integration with GLFW, SDL, GLUT, SFML and DirectX are provided. The AntTweakBar library mainly targets graphical applications that need a quick way to tune parameters (even in fullscreen mode) and see the result in real-time like 3D demos, games, prototypes, inline editors, debug facilities of weightier graphical applications, etc. The project is not maintained anymore but feel free to download and modify the source code to fit your needs or fix issues. -
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Togl
A Tcl/Tk widget for OpenGL rendering.
Togl provides a platform independent Tk widget for using OpenGL rendering contexts. -
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Simple MS Windows GUI application to create and edit MS Windows Icon (.ico) files, including XP and Vista compatible icons. The source images can be loaded from PNG and BMP formats. PNG translucency is supported.
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SmartRulerCapture
Professional screen capture tool with built‑in rulers multi-capture
Smart Ruler Capture is a professional screen capture tool designed for designers, developers, and anyone needing precise on‑screen measurements. It features multiple active capture zones, an overlay ruler with configurable units (px, in, cm), and a customizable grid for perfect alignment. The app offers eight color themes, full keyboard control, and works entirely offline - no analytics, no cloud uploads. Capture Commands -- Ctrl+Shift+C - Capture all visible areas -- Ctrl+Alt+C - Capture active area only -- Ctrl+Shift+F - Full screen capture Area Manipulation -- Ctrl+Arrows - Resize active area -- Ctrl+V - Paste from Clipboard -- Ctrl+Alt+V - Vertical Ruler -- Ctrl+Alt+H - Horizontal Ruler -- Ctrl+Alt+O - Toggle Ruler Available as an installer or portable version for Windows. ────────────────────────── MORE TOOLS BY DEVELOPER PETER OKERINOLA ────────────────────────── 🎵 Smart Music and Video Downloader https://sourceforge.net/p/smart-music-video-downloader -
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Converts bitmap file to c/c++ files (usefull for embedded systems with GUI). The color encoding is fully configurable (for example 16bit 5/6/5) and a "preview" bmp file is generated to show how much the picture is altered by the information reduction
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An extension of GWTCanvas widget to allow leveraging all of the features of the HTML 5 canvas element, like drawing text and shadows. Depends on browser support for the canvas element. See project home page link for usage details.
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ShivaVG is an open-source ANSI C implementation of the Khronos' OpenVG specification for hardware-accelerated vector graphics API. It is built entirely on top of OpenGL.
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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/
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Agar
Cross Platform GUI Toolkit
Agar provides a base GUI framework and a standard set of widgets from which graphical applications can be built which run natively under X11, Windows, MacOS, SDL and others. It takes advantage of texture and GPU acceleration wherever available. Agar can also attach to an existing framebuffer, SDL or OpenGL context and operate as a self-contained window-manager. It includes a standard library of general-purpose widgets, and is also designed to be extended externally. New widgets can be implemented as part of an application or library. Complex user interface elements can be realized often in few lines of code. Agar is also extensible at the low-level. The low-level API is documented such that modular drivers can be written which enable Agar applications to work seamlessly under many platforms graphics systems without any change at the application level. -
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This project is a continuation of the existing SkinDoc project. The aim is to create a number of programs aimed to simplify the creation of media player skins. Aimed primarily at Windows Media Player, support for Winamp and others will be added.
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Eclipse Visual Editor
Community Supported Eclipse Visual Editor
The Eclipse Visual Editor project is a platform for creating Visual classes and GUI builders within Eclipse. The project currently provides support for WYSIWYG editing of Swing/AWT and SWT/RCP user interfaces. Originally developed as an Eclipse Project the Visual Editor project was discontinued and archived in June 2011. This project is a community based fork of the archived sources. The archived source and website trees have been converted from CVS to Subversion. This code can be freely downloaded or browsed online using the 'Code' link above. The VE releases are available for installation from the Eclipse Marketplace or using the Eclipse Update Manager. Click on the Download button to download the most recent release for offline installation using the Eclipse Update Manager. See the Wiki FAQ for more information about installation options. -
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F2IBuilder, is a generator of bitmap fonts, opensource and multiplatform, developed in Java language, according to the GPL. F2IBuilder, é um gerador de fontes bitmap, opensource e multiplataforma, desenvolvido em linguagem java, de acordo com a lice
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Free open source PDF reader for smart phones using Windows Mobile 2003/2003SE, WM5 and WM6) This is a free PDF reader for smart phones using all the common Windows Mobile operating systems... Cab installer is also available for download for free.
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tkgifviewer
Image viewer for animated GIFs
tkgifviewer is an image viewer to open and manipulate images, especially animated GIF images. tkgifviewer has two operational modes, One is an image slideshow, showing one image at a time from those specified on the commandline. It will show (animated) thumbnails of images if started in thumbnail mode. It is possible to manipulate the animation time of the GIF images. Moreover it is possible to execute operations on images like Move File, Create Link, Delete File, and so on. For user convenience tkgigviewer can open and display other image formats. Furthermore this project provides the Tk package tkimagewindow which can be used in your own application for displaying animated GIFs (and other image formats). -
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Active Graphs and Charts
Add Powerful reporting features to your Web / Intranet pages and appli
With the advanced graphing functionality you will be quickly adding impressive and dynamic charting capabilities. The graphing software is completely self contained within a single file making this an ideal solution for the incorporation of graphs and charts into web / intranet pages and applications. Versatile components provide the ability for web authors and developers to easily build and publish dynamic and interactive graphs and charts. -
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Baby X
X Windows baby toolkit
Baby X is a simple toolkit for X Windows. There's also the Baby X resource compiler, which can be used as a standalone program or to get resources together for Baby X programs.
