Seamless Texture Generator

Seamless Texture Generator is a tool for creating seamlessly tileable images from photographs quickly and easily, while retaining maximum image quality. STG will save you hours of work. It makes most textures seamless with a single click, while simultaneously correcting highlights and shadows. And for those textures, which need a little extra TLC, STG has the ability to crop/rotate/and remove perspective simply by moving the corners of a selection region.
STG was created with the artist in mind. It uses a proprietary algorithm designed to retain as much of the original image quality as possible. Other seamless texture programs blur, smear, and warp the image to make it seamless. Color saturation and contrast is lost, leaving visible bands in place of the seam. STG does not.