OUTDATED - Use Rom Organizer 3 instead.
This is a program that uses No Intro database files to create an organized copy of a local romset.
It can create merged sets (where a game folder is created containing all versions of a game that you own) or 1G1R sets (1 Game 1 Rom; each folder contains only the "best" version of a game; ideally, the latest non-demo/proto USA revision). It also attempts to rename roms with slightly inaccurate names to match their database counterparts (such as changing "Rev 1" to "Rev A", fixing capitalization, etc.), or asks you to rename a misnamed ROM within the program itself if it can't find a match on its own, all while keeping a list of roms that have already been copied/organized (so it won't re-organize them if you add additional ROMs to your set later). Finally, games are also sorted by primary region (e.g. if a USA version of a game exists, the game folder containing all versions will be placed in the USA folder).
So for example, your local romset containing:
D:/Romsets/Sega - Sega Genesis/My Game 1 (USA).zip
D:/Romsets/Sega - Sega Genesis/My Game 1 (Europe).zip
D:/Romsets/Sega - Sega Genesis/My Game 1 (Japan).zip
D:/Romsets/Sega - Sega Genesis/My Game 2 (Europe).zip
D:/Romsets/Sega - Sega Genesis/My Game 2 (Japan).zip
... provided you have a database file:
D:/Rom Tools/No-Intro Database/Sega - Sega Genesis.xmdb
... will be copied and sorted as:
D:/Roms/Merged and Sorted/Sega - Sega Genesis/USA/My Game 1/My Game 1 (USA).zip
D:/Roms/Merged and Sorted/Sega - Sega Genesis/USA/My Game 1/My Game 1 (Europe).zip
D:/Roms/Merged and Sorted/Sega - Sega Genesis/USA/My Game 1/My Game 1 (Japan).zip
D:/Roms/Merged and Sorted/Sega - Sega Genesis/Europe/My Game 2/My Game 2 (Europe).zip
D:/Roms/Merged and Sorted/Sega - Sega Genesis/Europe/My Game 2/My Game 2 (Japan).zip
All versions of My Game 1 are stored in the USA folder since a USA version exists, while all versions of My Game 2 are stored in the Europe folder because a USA version does not exist, but a European version (another English region) does.
This isn't very user-friendly or customizable; I only made it for my own personal use. But feel free to use it if you want; it won't break anything (your ROMs are only copied, not moved/deleted), and I updated a few path-related things for other users to make it more friendly. Just make sure you change the input/output paths in the settings file.