PixelStyle
PixelStyle Photo Editor for Mac is an all-in-one photo editing and graphic design software, providing professional high-quality photo processing tools to edit the photos, enhance and touch up photos on Mac OS X.
RealWorld Paint is an free portable image/photo/animation editor. It supports layers with styles and can import and export Photoshop, GIMP and Paint.net images with layers.
realworld paint is an free portable image/photo/animation editor. it supports layers with styles and can import and export photoshop, gimp and paint.net images with layers.
there are all usual drawing tools and some specialized tools for photo retouching like clone, crop with perspective correction, red eye remover or liquify equivalent.
animated gifs can be created, edited and optimized.
there are downloadable media packs and plugins and rwpaint can use photoshops .8bf image filters for yet more flexibility.
Portable Layers support Retouch photos
Productivity Phots and Graphics
portable drawing image-editing layer-support Discontinued animated-gif-creator photo-retouching animation-graphic-editor apng