Kleopatra

A certificate manager for OpenPGP and X.509 (S/MIME) and common crypto dialogs.

https://gyazo.com/98c610bba840847d967c5b81ed21f251

https://gyazo.com/ed3fa834c86da57233f7e58a9f90e759

https://gyazo.com/96206df4d499103f9ae3a7474a4c352f

https://gyazo.com/4fa62fd2c59bfe4c603b3abaff96c3fa