WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
Open source disk encryption with strong security for the Paranoid
GnuPG 2.2, 2.3 and 2.4 distributions for OS X / macOS
Popular easy-to-use and secure password manager
Professional password generator and manager with full Unicode support
FIDO® Certified StrongKey FIDO Server (SKFS)
Implementation of the EDIINT AS2 protocol (RFC 4130)
OpenSC - tools and libraries for smart cards
For full, incremental, compressed and encrypted backups or archives
PGP graphical user interface
cross-platform, encryption application
Linux encrypted filesystem management tool
Single Linux or Windows binary for secure text encryption
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
UFONet - Denial of Service Toolkit
Smoke: Android Crypto Chat Messenger