Dump3 is a duplicate detector performance. This is a program in java so as to find any duplicate or similar files on your hard drive. If other programs use the file titles or ID3 tags to find these files, Dump3, meanwhile, is based on content analysis. Thus, it can easily detect such duplicate files whose names have been changed, the images whose orientations were changed, programs whose extensions were recompressed and more. Dump3 can send the results found within a MySQL database and allows you to check the proper functioning of the files it can not read.