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Float-ditherer is a tool that converts images into pure 1-bit images using a user specified palette tailored to convert images,textures and sprites using a float-based sampling method and float matrix.
The software is meant to be lightweight and for power-users
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.
All-in-one program for creating 2D scrolling games. Compile your games into stand-alone .NET executables or customizable C# source code. The IDE and framework are build on OpenTK, which wraps OpenGL, so generated games can be cross-platform.
Purple Koala is a free and open source cross-platform simple drawing and painting software.
Part of Purple Animation Tools by O. Bahri Gordebak (purplehuman).
See Wiki for details.
Note that Sourceforge project page doesn't always show the latest download. Please click Files above and browse files before download.
Latest version is 1.5 right now.
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AprilBrush is a Qt-based application for digital painting with support for layers, brush libraries and multi-page, written in C++/JavaScript/QML languages. The program saves the image files in the format OpenRaster and can also export them to PNG. Required a pressure sentive input device (graphic tablet).
Source code can be find in a git repository:
https://github.com/krre/AprilBrush-Desktop
This project is now hosted at https://github.com/yomboprime/colorator
Colorator is a Java image editor for PC, to make images in hi resolution color for the original Sinclair ZX Spectrum 8-bit computers. Colorator can also edit normal SCR Spectrum images. It can export to TAP to view in your real ZX Spectrum or emulator.
A Linux/Windows tool to draw and convert C64 hires bitmap graphics.
http://csdb.dk/release/?id=128693
NOTE: I left SourceForge for reasons not ethical to mention here. You can find me and my further work at these locations:
http://hermit.sidrip.com
http://csdb.dk/scener/?id=18806
https://github.com/hermitsoft/
Tilemaster is a tool to create, edit and manage tilesets for (C)RPGs and other types of computer games. Tilemaster supports tile metadata and includes a simple tile/sprite editor as well.
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CxImage is a C++ image processing library. It can load, save, display, transform images in a very simple and fast way, with transparency, multiple layers and selections, support for BMP GIF JPG PNG MNG TIF ICO TGA PCX J2K JBG RAS PNM RAW PSD
ArahPaint4 - program for drawing images in repeat
mainly intended for textile design (jacquard)
- supports different X:Y aspect ratio
- layers
- unlimited undo
- works fast with large images
- seamless drawing in repeat
- advanced textile filters
- integrated image browser
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.
Transparency is a small tool for transparent PNG processing on the command line. It provides conversion of white to transparency, and the preparation of transparent PNGs for perfect GIF export (i.e., "partial" application of the alpha channel).
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.
This is an open source image and photo editing software based on Java. It has a friendly user interface with support for layers, special effects and so on.