CryptoTwittos - Own Twitter accounts, on the blockchain
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
Ethereum Gas Monitor - Ethereum Gas Monitor is a mac menu bar app that displays gas prices for fast, average and safe slow ethereum transactions.
Keybase Chat - End-to-end encrypted chat built into Keybase
NYSE First Trade NFTs - NYSE now lets companies "own" the moment in time where a they first goes public.
Crypho - End-to-end-encrypted messaging and file sharing