These are not my applications. I found them on the retropie forums. They get rid of non working games, mature games, etc using catver.ini and the mame.xml that mame generates. This does not sort by controls and hardware/systems like lightspeed did. However these are way easier to use. Anyone have a way to sort out the different files for the different systems on Demul? I had a working copy about two years ago but just updated it and now having to rebuild the collection. I will probably end up doing it by hand, but didn't know if anyone had a way to sort the demul games out by system.
https://github.com/cosmo0/retropie-arcade-manager
https://retropie.org.uk/forum/topic/7606/simple-arcade-multifilter-app-for-mame-and-fb-alpha-sets-get-rid-of-adult-and-mahjong-games
Edit, solved my Demul problem: