Add digital signatures to PDF documents - GUI and CLI, cross-platform
Powerful webdav client and sync tools with client-side AES encryption
yubikey-agent is a seamless ssh-agent for YubiKeys
A modern, AI-Smart, WASTE p2p for ipv4 and invisible address spaces
FIDO-enabled, cloud file encryption with centralized key management.
SCSI Tape Encryption Manager
SES brings back the uncrackable onetime pad, with a digital twist.
ISC lets you encrypt & decrypt text and files of any type up to 4GB
Ciphermail email encryption gateway (S/MIME, OpenPGP, PDF encryption)