PumasViewer is an image viewer with minimal user interface and advanced capabilities. It shows the image floating on the screen without any border. It features easy browsing between images with cursor keys or mouse, commenting parts of image with border and label, show thumbnails, directly from EXIF if available, show all EXIF tags, AForge image filters: gray scale, invert, median, smooth, sharpen, blur, oil painting, sepia, pixelate, jitter, edge detection, rotate colors, load RAW images through libraw, histogram, apply filters on selected parts or whole image, and show image from Clipboard.