Keyper by Jarrid is a suite of crypto key management APIs
Complete and free implementation of the OpenPGP standard
A high-level OpenPGP library
Turn any USB flash drive into a master key for your PC
FIDO strong authentication, encryption, digital signature engine
FIDO-enabled, cloud file encryption with centralized key management.
Secure mail + Tor gateway
Self-hosted vault for team server credentials & audit logging
EaseFilter File Secure Sharing Example