Immix aligns and merges a set of similar images in order to decrease the noise.
JDraw is a pixel oriented graphics editor. It is entirely written in Java, easy to use and saves (animated) GIFs, JPEGs, ICOs (favicons) and PNGs. Requires J2SDK 1.4 or higher.
JSnapshot is a screen capture tool written in Java. The goals are : simple use, many capture options(window, all screen, ...), some useful edit tools (crop, resize, ...), no useless functionnalities.
Reference library for supporting the Portable Network Graphics (PNG) format.
MNGeye was the world's first Windows implementation for the MNG image/animation format. This project is intended as a platform to re-develop the existing Delphi-code in CLX-compatible format for easy maintenance between Delphi & Kylix.
MrImage is a win32 raster image editing application. It is written in C++ using MFC and is based on CxImage. It is more powerful than MSPaint but still easy to use. * THIS PROJECT IS NO LONGER UNDER DEVELOPMENT *
Tool to smoothly adapt exposure on wide angle panoramic pictures (supports only 24 (3*8) or 48 (or 3*16) bit TIFF pictures so far).
Octree-based texture mapping for 3D models as described in the SIGGRAPH 2002 paper "Painting and Rendering On Unparameterized Models" from Thrown Clear Productions (www.thrownclear.com).
A strictly .NET based Image Editing Tool aimed for modularity and usability.
The cross-platform open source alternative to MS Paint.
PxPaint is an attempt to reproduce functionality and feel of the old Amiga paint programs "Deluxe Paint" and "Personal Paint" in a modern modular C# environment. (In other words, a DPaint clone for Windows.)
Photovault is an photo archiving/organization system
Photonix is a 3D Modeling and Rendering Tool that have intentions to reach 3D Max to produce Realistic Images using Photon Mapping
Image editor / converter for MCU-based embedded projects
This editor mostly intended for image converting and preparing them for use in MCU-based projects. Program provide very limited set of paint functions, so if you want to make some graphics from scratch, maybe it will be better to use another image editor and copy-paste or import drawings to PixelImage. Maybe you'll be interested in a font editor for embedded projects: TFT Font Factory (https://sourceforge.net/projects/tft-font-factory/), my another project Modified tickets permissions: Now anyone can create ticket and post comments (pre-moderated).
Open-source (GPL) pixel art editor (based on the freeware PIXELplus 256) designed for and written in portable freeBASIC.
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.
Pixi image editor. Common features like: layers, im/export bmp/png/jpg/tga/tiff, scripted command interface, alpha, layers are worked on as floating points. Written using freepascal, and a work in progress. Modular design. Latest source in HG.
RPhoto is a small software aiming at the easy handling of digital camera's photos, and capable of cropping photos with a constant width / height ratio (by example 4:3 for numeric photos). It also have lossless crop / rotate / flip operations.
Windows based editor designed to allow writing extensions covering any user format of raster fonts. Supports fixed/variable character height/width, incomplete character sets, etc. Has a lot of useful character-editing functions (italicize, bold, shift...
SIMP is a portable very easy to use straightforward designed application. The program consists of just a single executable. SIMP supports multithreading, drag and drop, dynamic aspect ratio calculation, copy & paste from clipboard etc. Most valuable feature that distinguishes it from similar applications is that SIMP keeps and copies the directory structure of the source image files to the output folder.
Sam\'s Pixel Art Tool is a GTK2-based image editor, aimed at people creating simple 2D graphics and animations. It aims to be small, fast, efficient and convenient.
Scheme Maker is an application designed to enable you to create cross-stitch and knitting schemes from images and photos. You can determine width and height of your scheme, the number of colors and stranded thread firm for scheme key.
Advanced image processing toolbox for Scilab on Unix/Linux/Mac OS
SIP is the image processing and computer vision package for SciLab, a free Matlab-like programming environment. SIP reads/writes images in formats like JPEG, PNG, and BMP. It does filtering, segmentation, edge detection, morphology, and shape analysis. Download from Git http://siptoolbox.sourceforge.net/devel
SkyDraw is a raster image editor developed with the wxWindows cross-platform windowing toolkit. The final supported platforms will include Linux, MacOS (8/9/X), and Windows. Features will include layers, channels, transparency, and potentially plugins.
SpriteEdit is a sprite editor and animator utility. It is intended to be used with AGAST (Adventure Game Authoring System), but may be of interest to anyone interested in animations.