dpixel - A Pixel Art Remaster Tool
A downloadable dpixel for Windows and Mac OS X
dpixel is a pixel art remaster tool using classic algorithms that can open and export jpg, png and animated gif.
You can also apply many GPU shaders included (not available to Mac binary yet)
You can find another binaries and source code in https://github.com/marcoc2/dpixel
Feel free to give your feedback about this tool!
Instructions on github wiki: https://github.com/marcoc2/dpixel/wiki