Picturenaut. A Free HDR (high dynamic range) Software

If you need a freeware High Dynamic Range Imaging Software then you can try out Picturenaut.

Actually HDRI is a set of techniques which allows you to get a greater dynamic range of exposures than normal digital imaging techniques. It can be used to accurately represent the wide range of intensity levels found in real scenes.

Picturenaut is a freeware High Dynamic Range Imaging (HDRI) software which provides automatic image alignment, exposure correction, color balancing, noise level compensation and automatic derivation of the camera curve from the source images.

Source : http://danzyworld.blogspot.com