For pictures I use Pictview for inspecting and moving images from folder to folder and from machine to machine and backup.
One feature I would appreciate would be to read raw formats for many cameras and view them by + F3, but in addition, printing 300 dpi images directly in a suitable size and printing "contact sheets" with 8 or even 4 images to an A4 page would be VERY useful.
PictView: printing contact sheets
According to the thread HELP US PLEASE: PictView and RAW format support Altap is working on RAW format support in PictView. If you have camera not listed in the thread, you can help Altap by sending them some sample pictures.