Active Pixels could be considered as a free Photoshop clone: a program you can use to edit, retouch and optimize your photos.

Going deeper in the program's features, you'll see Active Pixels includes filters, all kinds of tools, support for layers and an automatic photo optimizer.

One of the most important elements in Active Pixels is filters. It features more than 50 filters conveniently categorized in 9 groups, which you can use to obtain all sorts of effects, from applying a newspaper-like view to your picture to reducing noise or grain.

The program's tools are very similar to those of Photoshop, which makes it easy to manage for all Photoshop users out there. But it also has two important differences when compared to Adobe's big shot: it's free and it's only about 7 MB.