Romdigger can become interesting for those, who still plays games from old game consoles (like Nintendo Entertainment System) on emulator and store rom-files of favorite games on hard disk.
After setting up this library, if one opens catalog with rom-files in konqueror/dolphin, the result would look much like on the attached screens - for each rom file shown a icon with preview of the corresponding game - as if this rom file is usual png or jpg picture.
Currently it supports games from NES, SNES, Sega Genesis and Game Boy Advance platforms.
Besides preview picture, rom files would have meta-info (like actual game name, publisher, platform etc) available.
Romdigger consists of the core kde-independent library which is called romdigger, and also 2 frontends of choice - romdigger-kde3 and romdigger-kde4
More info and screenshots can be found on the project's home page.
Binaries available for OpenSUSE 10.3, for other distributions build from source code (see build instructions on home page - taking romdigger archive attached here is not enough)