Inpaint

Inpaint is a graphics software for retouching photos and removing unwanted objects, supported on Microsoft Windows and Macintosh.

Features
Inpaint focuses on photo editing via simplified semi-automatic tools and mechanisms. The program includes a tool similar to the Healing Brush tool in Adobe Photoshop CS5 with the Content-Aware mode on. Similar to Healing Brush, the tool tries to replace bad or damaged texture with good texture from another area to create a seamless repair of an image.

Specifically, Inpaint is capable of performing the following functions:
 * Removal of unwanted objects from an image
 * Facial retouching
 * Old photos repair
 * Arbitrary merging of multiple images into one
 * Object cloning
 * Restoring empty areas on panorama photos

Batch processing of multiple images is possible via the Batch Inpaint version.

It also contains online tutorials.