Apache Shiro
A computer algebra system written in pure Python
Easy-to-use and powerful homomorphic encryption library
Keybase Go library, client, service, OS X, iOS, Android, Electron
An Information Security Reference That Doesn't Suck
Algorithms and data structures implemented in JavaScript
iText for .NET is the .NET version of the iText library
Modern cryptography for PostgreSQL using libsodium
C++ cryptographic library (modern hash functions, ciphers, KDFs)
Mundane is a Rust cryptography library backed by BoringSSL
End-To-End is a crypto library to encrypt, decrypt, digital sign
Cross Language AES 256 Encryption Library
SLS Team Java Library
Stanford Javascript Crypto Library
FIDO strong authentication, encryption, digital signature engine
Another C++ Hack
Secure login system for php frameworks, applications ansd sites
Java native access for pc/sc, pkcs11, openct based on JNA