C Graphics Software

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  • 1
    XTrkCAD Model RR Track Planner

    XTrkCAD Model RR Track Planner

    Model Railway CAD program

    XTrackCAD is a open-source, free, CAD program for designing model railroad layouts. You can easily create layout of any scale or size. Libraries for many brands, scales and gauges of track and turnouts/points and model structures are included. Adding new components is easy with the built-in editor. It runs on Windows, Mac and Linux,
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    Downloads: 426 This Week
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  • 2
    Luminance HDR

    Luminance HDR

    Complete solution for HDR photography

    Luminance HDR is a complete suite for HDR imaging workflow. It provides a wide range of functionalities, during both the fusion stage and the tonemapping stage. Its graphical user interface, based on Qt5, runs on a variety of platforms, such as Microsoft Windows, Mac OS X 10.9 and later and several Unix flavors (Linux, FreeBSD and others). Input images can be supplied in multiple formats, from JPEG to RAW files. In the same way, output can be saved in many different formats as well, from JPEG to TIFF (both 8 bit and 16 bit per channel), enabling all the power of your post processing tools.
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    Downloads: 281 This Week
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  • 3
    APNG Assembler

    APNG Assembler

    Creates APNG animation from PNG/TGA image sequence.

    Creates highly optimized Animated PNG files from PNG/TGA image sequences. CLI versions available for all major OSes. GUI versions for Windows and macOS. Also, APNG Disassembler can be found at http://sourceforge.net/projects/apngdis
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    Downloads: 296 This Week
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  • 4
    libmng -THE reference library for reading, displaying, writing and examining Multiple-Image Network Graphics. MNG is the animation extension to the popular PNG image-format.
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    Downloads: 1,048 This Week
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  • 5
    Most digital cameras produce EXIF files, which are JPEG files with extra tags that contain information about the image. The EXIF library allows you to parse an EXIF file and read the data from those tags. Development has moved to https://github.com/libexif/. See https://libexif.github.io for more details.
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    Downloads: 201 This Week
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  • 6
    darktable

    darktable

    darktable is an open source photography workflow application

    darktable is an open source photography workflow application and non-destructive raw developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images, enhance them and export them on local or remote storage.
    Downloads: 35 This Week
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  • 7
    GLFW

    GLFW

    A project that has moved to GitHub

    GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan development on the desktop. It provides a simple API for creating windows, contexts and surfaces, receiving input and events.
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    Downloads: 151 This Week
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  • 8
    JarkViewer

    JarkViewer

    A lightweight, lightning-fast, and powerful image viewer

    JarkViewer is a lightweight, lightning‑fast image viewer for Windows 10/11 (64‑bit) that supports a wide range of modern image formats, from traditional JPEG/PNG to newer types such as AVIF, HEIC, JPEG XL, and various RAW files. It is designed as a native portable application with fully static linking, distributed as a single executable with no separate installer, making it simple to run from any folder or removable drive. The viewer handles static images, animated formats (GIF, animated WebP/PNG/APNG/JXL/AVIF), and special “live” photo types such as iOS Live Photos (.livp) and Android Motion Photos/Micro Videos, although audio playback for live photos is not yet supported. It also supports a broad set of RAW formats from various camera manufacturers, allowing photographers to browse their libraries without converting to JPEG first.
    Downloads: 29 This Week
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  • 9
    UFRaw
    The UFRaw (Unidentified Flying Raw) is a tool for reading and manipulating raw images from digital cameras. It supports most of the existing raw formats (any format supported by DCRaw). UFRaw can be used on its own or as a Gimp plug-in.
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    Downloads: 138 This Week
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  • 10
    projectM

    projectM

    projectM, a MilkDrop compatible opensource music visualizer

    projectM is an OpenGL based advanced music visualization program for Linux, Mac OSX, and Windows. It is backward compatible with all the features of Milkdrop 1.x (and now 2.x), but has many new toys and enhancements.
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    Downloads: 171 This Week
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  • 11
    Xournal is a GTK+/Gnome application for notetaking, sketching, keeping a journal using a stylus on Tablet PCs and other platforms. It aims to provide superior graphical quality (subpixel resolution) and overall functionality.
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    Downloads: 122 This Week
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  • 12
    A whole bunch of utilities for primitive manipulation of graphic images. Wide array of converters from one graphics format to another. E.g. from g3 fax format to jpeg. Many basic graphics editing tools such as magnifying and cropping.
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    Downloads: 138 This Week
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  • 13
    WebP Codec

    WebP Codec

    Library to encode and decode images in WebP format

    libwebp is the reference codec library for Google’s WebP image format, providing both encoding and decoding along with command-line tools. It supplies cwebp to compress images into WebP and dwebp to decompress them back, making it easy to test quality/size trade-offs across presets and tuning parameters. The GitHub repository is a mirror; the canonical source of truth lives on Chromium’s git, and developer docs are hosted on WebP’s portal. The project underpins WebP support across browsers, imaging libraries, and many native apps thanks to its stable C API. Additional companion repos host test data and demos, including JavaScript builds and timing tests for various platforms. As a widely deployed codec, libwebp balances compression efficiency, speed, and integration simplicity across platforms.
    Downloads: 26 This Week
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  • 14
    AA means Ascii Art - the AAlib (ascii art GFX library), BB (audiovisual demonstration for your terminal), aview (image browser/animation player), AAvga (SVGAlib wrapper for AA-lib), ttyquake (text mode quake), aa3d (random dot stereogram generator)...
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    Downloads: 227 This Week
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  • 15

    Potrace

    Transforms bitmaps into vector graphics

    Potrace is a tool for tracing a bitmap, which means, transforming a bitmap into a smooth, scalable image. A typical use is to create SVG or PDF files from scanned data. The resulting image can then be rendered at any resolution.
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    Downloads: 215 This Week
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  • 16
    void Image Viewer

    void Image Viewer

    Lightweight image viewer for Windows with animated GIF/WEBP support

    void Image Viewer is a minimal, lightweight Windows image viewer designed to open and display common image formats with extraordinary speed and simplicity. It supports a wide range of standard raster image types such as BMP, JPG, GIF, ICO, TIF, and also handles animated images like GIF and WebP, aiming to render them as accurately and quickly as possible for fast browsing without unnecessary UI clutter. Users benefit from its low resource usage, quick startup, and the ability to run multiple instances simultaneously, making it practical for both quick previews and continuous slideshows of large image sets. The application includes options like natural file sorting, drag-and-drop support, basic command-line parameters for automation, and a slideshow mode tailored to straightforward consumption of local photo collections. Because the viewer purposely avoids heavy editing features and complex menus, it feels snappy for users who primarily need to view images, scroll through folders, etc.
    Downloads: 20 This Week
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  • 17
    FontForge – An Outline Font Editor
    NOTE: FontForge has moved to fontforge.github.io, newer binaries and sources are available at github.com/fontforge. FontForge allows you to edit outline and bitmap fonts. You may create new ones or modify old ones. It is also a format converter and can interconvert between PostScript (ascii & binary Type1, some Type3, some Type0), TrueType, OpenType (Type2), CID, SVG
    Downloads: 110 This Week
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  • 18
    Pure Data Computer Music System
    The Pure Data (short Pd) project on SourceForge unifies the extensions (or externals) written for the Pure Data Graphical Computer Music System written by Miller Puckette with contributions from many others.
    Downloads: 79 This Week
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  • 19
    Mozilla JPEG Encoder Project

    Mozilla JPEG Encoder Project

    Improved JPEG encoder

    MozJPEG improves JPEG compression efficiency achieving higher visual quality and smaller file sizes at the same time. It is compatible with the JPEG standard, and the vast majority of the world's deployed JPEG decoders. MozJPEG is compatible with the libjpeg API and ABI. It is intended to be a drop-in replacement for libjpeg. MozJPEG is a strict superset of libjpeg-turbo's functionality. All MozJPEG's improvements can be disabled at run time, and in that case it behaves exactly like libjpeg-turbo. MozJPEG is meant to be used as a library in graphics programs and image processing tools. We include a demo cjpeg command-line tool, but it's not intended for serious use. We encourage authors of graphics programs to use libjpeg's C API and link with MozJPEG library instead. Progressive encoding with "jpegrescan" optimization. It can be applied to any JPEG file (with jpegtran) to losslessly reduce file size.
    Downloads: 17 This Week
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  • 20
    gtkpod is a platform independent GUI for Apple's iPod using GTK. It allows you to import your existing iTunes database, add songs, podcasts, videos and cover art, and to edit ID3 tags. libgpod is a library allowing direct access to the iPod's conte
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    Downloads: 105 This Week
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  • 21

    Pix

    Image management application

    Pix is an image management application with image viewing, browsing, organizing and editing capabilities. It is part of the X-Apps project, which aims at producing cross-distribution and cross-desktop software. Pix supports numerous image types including: BMP, JPEG, GIF, PNG, TIFF, TGA, ICO and XPM; with optional support for RAW and HDR (high dynamic range) images. It is also able to view EXIF data attached to JPEG images. Pix has its own set of image editing tools that enable you to make color, hue, saturation, lightness and contrast adjustments, as well as a number of advanced tools such as slide shows, converting image format and more.
    Downloads: 15 This Week
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  • 22
    BRL-CAD

    BRL-CAD

    Open Source Solid Modeling CAD

    BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.
    Downloads: 79 This Week
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  • 23
    OpenCTM
    OpenCTM is a file format, a software library and a tool set for compression of 3D triangle meshes. The geometry is compressed to a fraction of comparable file formats (3DS, STL, COLLADA...), and the format is accessible through a simple, portable API
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    Downloads: 363 This Week
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  • 24
    LVGL

    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.
    Downloads: 13 This Week
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  • 25
    GLMixer

    GLMixer

    Graphic Live Mixer

    GLMixer performs real time graphical blending of several movie clips and of computer generated graphics. Drop video files in the mixing workspace and place them in a circular area to change their opacity ; if you selects two videos, moving them together performs a fading transition. This principle generalizes to a large number of videos. Direct interaction with the video allows to be fast and reactive, and to move and deform them on screen. The output of your operations is shown in the output window, typically displayed in full-screen on an external monitor or a projector. But the output can also be saved as a video file. Control GLMixer through network using OpenSoundControl, and generate graphics with ShaderToy GLSL code. Download : https://sourceforge.net/projects/glmixer/files/ Please note GLMixer is discontinued and superseded by vimix https://brunoherbelin.github.io/vimix/
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    Downloads: 64 This Week
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