Feh for Linux can be controlled with the keyboard and basic mouse actions. Various operation modes. Show all files in or below a directory. Change slides with your keyboard or automatically after a specific delay. List all files in/below a directory as clickable thumbnails with some file information. Clicking on the thumbnail will open the full-size image. Open all images, each in a separate window. Arrange image thumbnails and create a new image based on them. HTTP-Support + Autoreload. Can be used as wallpapersetter. Filelist support. Lots of keyboard shortcuts. Feh is quite usable even when you don't have a mouse connected to your PC.