mtPaint is a painting program which Mark Tyler developed from scratch so he could easily create pixel art and manipulate digital photos. It uses the GTK+ toolkit (version 1 or 2) and runs on PC’s via the GNU/Linux or Windows operating systems. Due to its efficient design it can run on older PC hardware (e.g. a 200MHz CPU and 16MB of free RAM).
Some of its main features include the following:
- A comprehensive and user friendly interface with customizable toolbars, screen sizes, screen layouts, zoom sizes, up to 1000 undos and more.
- Pixel art capabilities that allow you to edit indexed palette or RGB images; save and load BMP, GIF, JPEG, LSS, PNG, TGA, TIFF, XPM, XBM files; use image channels: Alpha, Selection, Mask, all saved to a PNG file; create up to 100 layers; create animations and more.
- Image manipulation such as the ability to quickly transform image gamma, brightness, contrast, saturation, hue, posterize from a single dialog, and preview the results in real time; apply various effects such as invert, greyscale, isometric transformations, edge detect, sharpen, unsharp mask, soften, Gaussian blur, emboss, bacteria; crop at the touch of a button and resize the canvas at will.



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An Ajax based Email and Web collaboration suite with the ability to share email folders, contacts, calendars, files, and carry out online document authoring with internal or external users.