With over 3000 dvd's, it is hard to remember what you have so I found Invelos DVD Profiler very helpful in keeping me from duplicate buys. : r/dvdcollection
DVD Profiler on the App Store
DVD Profiler - Download - COMPUTER BILD
DVD Profiler Alternatives: Top 7 Media Managers and similar apps | AlternativeTo
mediadogg Software LLC
My Movies - Migrating from DVD Profiler to My Movies