A very high quality package of printer drivers for CUPS on Linux, Macintosh OS X, and other POSIX-compliant operating systems. This project also maintains an enhanced Print plug-in for GIMP 2.x from the same code base.
Swiss army knife of image processing
GraphicsMagick provides a set of commandline tools and programming APIs for manipulating, editing, and converting raster and vector images. It is derived from ImageMagick, with the objective of providing better stability and performance than ImageMagick while retaining the original MIT/X11 license.
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.
Read, write and edit metadata
Perl library and command-line application for reading, writing and editing meta information (EXIF, IPTC, XMP, and more) in a wide variety of file formats (JPEG, TIFF, PNG, PDF, RAW, and more).
Album Shaper strives to be the most friendly, easy to use, cross platform application for organizing, annotating, framing, enhancing, stylizing, and sharing your digital photos.
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.
gPhoto is a program and library framework that lets users download pictures from their digital cameras. The libgphoto2 library gives you access to hundreds of models of digital cameras on several platforms. GIT repo and Issue tracker lives at https://github.com/gphoto/ these days.
An award-winning drawing program for children ages 3 to 12
Tux Paint is a free, award-winning drawing program for children ages 3 to 12. It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program. Kids are presented with a blank canvas and a variety of drawing tools to help them be creative. Along with paintbrush, shapes and text, Tux Paint includes a "stamp" feature to add pre-drawn or photographic imagery to pictures, and a set of "magic tools" that provide filter effects (like blur, tint and waves) and interesting drawing tools (like train tracks, bubbles and grass). Tux Paint includes a collection of "starter" images, both coloring-book style and photo-realistic, and a large collections of stamps are available as a separate download. Additional content can be added by parents and teachers, or downloaded from 3rd parties. Tux Paint is available for Linux, BSD, Windows, Mac OS X and Haiku operating systems.
2D & 3D TeX-Aware Vector Graphics Language
Asymptote is a powerful descriptive vector graphics language for technical drawing, inspired by MetaPost but with an improved C++-like syntax. Asymptote provides for figures the same high-quality typesetting that LaTeX does for scientific text.
Domination is a game that is a bit like the well known board game of Risk or RisiKo. It has many game options and includes many maps. Written in java it includes a map editor, a simple map format, multiplayer network play, single player, hotseat, 5 user interfaces and many more features, it works in all OSs that run java 1.4 or higher, and Android.
APTOS is an open source Apt translator project. It consists of several CAM applications, based on the Apt programming language. It is used to create control programs for cnc mills, lathes, water jets, lasers, and other industrial equipment.
Reference library for supporting the Portable Network Graphics (PNG) format.
3D game engine (more powerful redesign of the Cube engine) and FPS game
Please see laidout.org for current code and download location. Laidout is desktop publishing and imposition software for Linux, particularly for multipage, cut and folded booklets, with page sizes that don't even have to be rectangular. Bug reports welcome!
Synfig is a powerful, industrial-strength vector-based 2D animation software package, designed from the ground-up for producing feature-film quality 2D animation with fewer people and resources.
Sodipodi is general vector illustrating application for Linux/Unix and Windows. It uses W3C SVG as native file and in-memory image format and can do many neat things.
Free portable cross-platform Java Image Viewer And Manipulator
JIVAM - free portable cross-platform image viewer and manipulator, 100%-pure Java. Support BMP/GIF/PNG/JPG/JPEG formats. Support view, convert, resize and rotate images. Simple and intuitive GUI - Graphical User Interface. Developed with Java Spring Framework. Tested in Windows/Linux. Need JRE-1.8.
Imaging application for GNUstep and MacOS
PRICE: a high-quality image manipulation and enhancement application, also suitable as a multi-window image viewer. For GNUstep and Mac.
Open-source and cross-platform picture manager and organizer with complete meta information support: add, edit, search and remove XMP, IPTC, EXIF and JPEG Comment. It also offers batch conversion/renaming of images and lossless rotation and cropping.
Geo Arbores is a project for developing tools and extensions for GIS software and spatial opensource libraries (Kosmo, OpenJUMP and GDAL / OGR).
Simple tool for tagging photos for stock photo agencies
Based on tool "Image Tagger", adapted for stock photo agencies - handles multiple keywords as a long string with separator, Title and Description which can be automatically recognized by stock photo agencies. Keywords can be sorted and duplicates removed. Metadata can be applied on multiple selected images. All metadata can be copied and pasted from the image from different directory. If there is metadata missing, the image name is shown in red. Whats new in version 1.1.0: Added context menu with Cut/Copy/Paste/Delete functionality and all exif data viewer for selected file.
A generative art image evolver
"Generative art" software which evolves images/textures/patterns through an iterative process of random mutation and user-selection driven evolution. If you like lava lamps, and still think the Mandelbrot set is cool, this could be the software for you.
NOTE: This project is now inactive. There will be no more updates. The CVL library and tools use the graphics processing unit (GPU) for image and data processing. CVLView is a 2D and 3D viewer for arbitrary data sets. CVLTonemap is an interactive tone mapping tool for high dynamic range (HDR) images.
XPaint is a simple paint program for X, suitable for producing simple graphics. It does offer some advanced features such as image processing functions and gradient fill. XPaint was originally written by David Koblas.
Geeqie is a lightweight image viewer. It was forked from GQview. The development is focused on features for photo collection maintenance: raw format, Exif/IPTC/XMP metadata and integration with programs like UFraw, ImageMagick, Gimp, gPhoto or ExifTo The current development and project can be found on http://www.geeqie.org/. The sourceforge page will be deleted soon.