ROM Manager

Each game an emulator runs requires at least one archive, which has one or more files (ROM Images) inside.

A dat-file is a list of all files of all archives used by a specific emulator with name, size and hash.

A ROM Manager is software that uses a dat-file to organize the files that are on a computer so that a specific emulator is able to find its files and run properly.

List of ROM Managers
Below is a list of ROM Managers, split in two categories:

Most used

 * 1) clrmamepro
 * 2) RomVault

Other
These are alternatives that may be worth using: