Rainbow Painter 3 is an advanced image editor aimed at both professionals and amateurs who want to retouch photos, paint and draw.
Features
Everything in this program supports 32-bit float/channel in HDR, which lets you make adjustments back and forth without losing quality!
Support for Layers. Lots of blend modes, tools, effects etc.
View and edit seamless tiles in true WYSIWYG (What-You-See-Is-What-You-Get) style!
All you have to do is switch on the repeat function (horizontally, vertically or both) and start working.
All effects and tools support this mode and the Brush Strokes will continue over the edges.