Artweaver is an image editor that tries to simulate natural brush tools
eg. chalk, charcoal, pencils. It supports common image formats such as
BMP, GIF, JPEG, PCX, TGA, TIFF, PNG and PSD, in addition to its own
format (AWD). Image editing functions includes selection, gradient,
crop, fill, transparency, layers, effects (sharpen, blur, emboss, mosaic
etc.).