I recently had a freeware downloading spree and I found some drawing programs for Windows that aren't listed yet but might be of some use.
Rendera http://www.rendera.net/ is restricted to BMP and JPEG files and RGBA colour, and it has
only drawing functions: no filters, adjustments, selections, copy & paste, floodfilling (the only global command is clearing).
What are its redeeming features?
- Various brush compositing modes: replace, add, subtract, change hue, all with transparency.
- Independent choice of brush style and drawing tool, for example an outline rectangle of "chalk".
- Interesting, albeit mostly useful for large sizes, brush types (including procedural textures and simulated pencil hatching).
- Easily accessed commands to rotate the canvas through edges (to edit tiling images) and to wrap drawing commands themselves.
- Easily accessed commands to switch between drawing shapes from the center out or from corner to corner.
- Cloning supporting all drawing tools and brush types.
- When zoomed in, drawing tools don't draw at screen pixel locations but at image pixels.
- Perfectly symmetrical ellipses, regardless of direction; when starting from the center, only odd diameters are possible. It might seem trivial, but for example Paint.NET, PixelStudio, Artweaver, Project Dogwaffle draw completely wrong small ellipses.
- Preview of what pixels are going to be drawn with each command, particularly useful when zoomed in.
In brief, Rendera is rough but specialized and unusual.
Photobie http://www.photobie.com/ is a more full-fledged drawing/retouching program with an unusually ugly user interface.
Its main interesting feature is that every drawing command can create its own layer automatically, with the obvious potential for detailed editing. It has the most complex "Layer Manager" I've ever seen.
EDIT: Panda has added both programs to the main list.
RE-EDIT: Photobie updated to "Photobie Design Studio".
