zeldman on Twitter: "@lastfm 3. The official @lastfm Scrobbler can't be opened in macOS Catalina because the app is unsigned, so can't be checked for malware. This has been a known problem
Universal Scrobbler
Another new feature: scrobble tracks from a friend's profile in the Open Scrobbler! : r/lastfm
Top 25 openscrobbler.com competitors
universalscrobbler.com at WI. The Universal Scrobbler