OpenSC - tools and libraries for smart cards
Mount EncFS folders - multiplatform style.
Implementation of the EDIINT AS2 protocol (RFC 4130)
Free GUI replacement for Java command-line utilities keytool/jarsigner
GnuPG 2.2, 2.3 and 2.4 distributions for OS X / macOS
Digital Signature & eSigning software. Bulk PDF signing. Sign all Page
Decrypt encryptions without knowing the key or cipher
A stable and secure tunnel based on KCP with N:M multiplexing and FEC
Collection of standard and secure cryptographic algorithms
iOS firmware tools