A simple paint program for Mac OS X
Paintbrush is a Cocoa-based paint program for Mac OS X, similar to Microsoft Paint and MacPaint.
Reference library for supporting the Portable Network Graphics (PNG) format.
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.
GIMP (GNU Image Manipulation Program) is a free image editor
GIMP is an acronym for GNU Image Manipulation Program. Use GIMP as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc. GIMP is expandable and extensible; it can be augmented with plug-ins and extensions to do just about anything. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted.
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.
3D game engine (more powerful redesign of the Cube engine) and FPS game
FreeImage is a library project for developers who would like to support popular graphics image formats (PNG, JPEG, TIFF, BMP and others). Some highlights are: extremely simple in use, not limited to the local PC (unique FreeImageIO) and Plugin driven!
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.
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.
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.
A full featured cross-platform image library
Developer's Image Library (DevIL) is a cross-platform image library utilizing a simple syntax to load, save, convert, manipulate, filter and display a variety of images with ease.
XTrackCAD is a CAD program for designing model railroad layouts. You can easily create layout of any scale or size. Libraries for many brands of track and turnouts are included. Adding new components is easy with the built-in editor.
Toolkit for working with and mapping geospatial data
GeoTools is an open source (LGPL) Java code library which provides standards compliant methods for the manipulation of geospatial data. GeoTools is an Open Source Geospatial Foundation project. The GeoTools library data structures are based on Open Geospatial Consortium (OGC) specifications.
Vector drawing program for LaTeX using PSTricks
LaTeXDraw is a graphical drawing editor for LaTeX. LaTeXDraw can be used to 1) generate PSTricks code; 2) directly create PDF or PS pictures. LaTeXDraw is developped in Java and thus runs on top of Linux, Windows, and Mac OS X.
The Animated Portable Network Graphics (APNG) is an unofficial extension of the Portable Network Graphics (PNG) format. APNG patch provides APNG support to libpng.
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.
DD Thought Tickler is a thinking process recorder. It is a kind of vector graphics editor and idea processor. It has new function not ever known. It records your thinking process, by memorizing every steps that you've operated on this tool.
Tag FLAC ,Vorbis, Lyrics, WMA, Wavpack, ID3 Tags in a Smarter Way.
IDTE is a full featured tag editor for Windows which supports tagging of FLAC, APE, ID3V1.x/2.x, WMA, LYRICS, VORBIS Tags in audio files. It also supports the playback of 40+ various lossy and lossless music formats such as FLAC, ALAC, OGG, APE, MP3 etc. It can rename files based on the tag information, export tag information, create playlists, search for incomplete tags on Internet, fetch lyrics, fetch cover art, supports CUE sheet, Can process multiple files at same time, allows batch file processing, supports SFX, visualizations and more... IDTE on Facebook - http://www.facebook.com/pages/IDTE/572921366148095?ref=hl A New minimalistic version of IDTE is also available for download - https://sourceforge.net/projects/idte PLEASE NOTE - We do not recommend you to Tag MP4 Videos & WAV files using IDTE. Support for WAV tags are ambiguous (http://wiki.audacityteam.org/wiki/WAV) and only certain Players are capable of reading/processing them. USE AT YOUR OWN RISK!
Simple and intuitive 2D vector drawing for electronics and not only.
A multiplatform vector drawing program with a complete library of electronic symbols. Schematics and drawings are stored in a very compact text format. There is no netlist concept behind the drawings (so no simulation, and this is a choice) but this allows a great graphical flexibility and ease of use, making FidoCadJ the perfect tool for exchange sketches in forum and newsgroup discussions with a few clicks. Drawings can be exported in several graphic formats, such as pdf. Follow the development live on Twitter: https://twitter.com/davbucci
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).
A powerful editor for games based on or similar to id Software's series of Quake games. Currently supports 37 distinct games, and a countless number of mods. Integrates a map editor, model editor, archive editors and texture management.
A fast way to set photo metadata tags
FastPhotoTagger tries to be the fastest way to set the metadata in your photos. Add, change, delete, and search the metadata fields of your choice. FastPhotoTagger excels when you have lots of files and lots of metadata. With FastPhotoTagger, you can - Set multiple images to have the same tag values - Set individual images to have unique tag values - Display all the metadata in an image - Compare and edit all the metadata in several images - Choose the metadata fields to work with: EXIF, XMP, IPTC, etc. - Define hierarchical keywords - View images and slideshows that display tag values as captions - Create and search a metadata database FastPhotoTagger has versions for PC and Android. FastPhotoTagger uses ExifTool to read & write metadata, HyperSQL to manage its database, and dcraw to display DNG & RAW images.
A free and open source screenshot tool optimized for productivity
Greenshot is a lightweight screenshot software tool for Windows that quickly creates screenshots of a selected region, window, or full screen; you can even capture complete (scrolling) web pages from Internet Explorer. Greenshot easily annotates, highlights, or obfuscates parts of the screenshot. Greenshot also exports screenshots in various ways: save to file, send to printer, copy to clipboard, attach to e-mail, send Microsoft Office programs, or upload to photo sites like Flickr or Picasa. And Greenshot has a lot more options, to simplify the creation of, and work with, screenshots every day. Overall, Greenshot is easy to understand and configurable, that's why it is an efficient tool for project managers, software developers, technical writers, testers, and anyone else creating screenshots.
A Java image editor
Pixelitor is a cross-platform raster graphics editor written in Java. It supports layers, layer masks, text layers, drawing, multiple undo, etc. It has more than 80 image filters and color adjustments, some of which are unique.