Luxology ImageSynth 2.0 (Photoshop Plugin and Standalone App)

From the .nfo file:

imageSynth 2 is an advanced technology that allows you to create seamless textures and high-resolution tiled images from low resolution sources. It?s the ultimate organic pattern making tool for creating infinitely tileable images ? a ?must have? for every artist?s digital tool box.

     Run fo-is2s.exe if you want to install standalone program and fo-is2p.exe for Adobe Photoshop plug-in.  

     Note: standalone version says beta4 in "about" dialog box, but actually it's final 2.0, developers just forgot to update version info