Mutable
Creator of Mutable — a web-based client for managing Nostr mute lists, with Mute-o-Scope to see who's muting you.
Mutable lets you back up, edit, discover, and share Nostr mute lists (kind:10000). Mute-o-Scope searches public mute lists to show exactly who has muted a given profile, with a color-coded Mute Score indicating overall visibility on Nostr.