Coracle.social by nostr:npub1jlrs53pkdfjnts29kveljul2sm0actt6n8dxrrzqcersttvcuv3qdjynqn has some WoT functionality. 

Also
nostr:npub1u5njm6g5h5cpw4wy8xugu62e5s7f6fnysv0sj0z3a8rengt2zqhsxrldq3
built
https://github.com/wds4/pretty-good
He did a presentation about it:
Bitcoin Park: Nostrville 2023: Nostr, Lists, & Web of Trust https://podcasters.spotify.com/pod/show/bitcoinpark/episodes/Nostrville-2023-Nostr--Lists---Web-of-Trust-e2cvi12