One Cat Viewer Free - Version 5.0 The classic freeware image viewer reborn. Sleek, completely redesigned thumbnail viewer with support for slide shows, video, image conversion, printing, photoshop support, and more. Thumbnail sizes and layouts can be quickly switched between, multi-processor support speeds up thumbnail creation, and a new layout design makes viewing much easier. And it's free. No adware, no nag screens, no time limit. Free for personal or business use.