The infrastructure is still maintained, and the client is still being developed/updated (slowly). . You might be able to keep adding PGP keys, but newly-generated device keys have been NaCl keys for a while.
What about Keybase? https://keybase.io
The infrastructure is still maintained, and the client is still being developed/updated (slowly). . You might be able to keep adding PGP keys, but newly-generated device keys have been NaCl keys for a while.