SLK_img2pixel
Convert images/textures to pixel art
PixelOver
Art to Pixel Art
Pixelate post-effect/shader (Unity)
A shader to pixelate game's output
PixelAfterAll (PixelArt Conversion Tool)
PixelArt converter, join nodes, customize.
Pixel Picasso
Let the computer pixelate your art for you.
Cool Pixilate Effect Tool
If you looking for easy and fast tool to make pixelization effect on images, photos you can try this little program.
Pixelate Your Images
Add a cool visual effect to your images with this pixelization tool.