The application DiskMuster is an attempt to write modern multiplatform open source GUI applications using Qt libraries. The purpose is to organize your data storages in the simple database and to provide you basic information about single files.
The idea of using is following. You put your CDs, DVDs and other mediums into your DVD-ROM, the program will search for important data about files, make some thumbnails of your pictures, read mp3 tags, read video resolution, FPS, codec etc. and it will save it in local database.
If you're looking for a free non-win-only replacement to Disk Explorer Pro or Whereisit, you are at the right place.