Java ports and bindings of the LZ4 compression algorithm and the xxHash hashing algorithm
A Java implementation of OpenBSD's Blowfish password hashing code http://www.mindrot.org/projects/jBCrypt
Zero-allocation, pretty fast implementations of non-cryptographic hash functions for byte sequences or blocks of memory
Pure Java implementation of the Murmur Hash algorithms.
A Java implementation of SpamSum / SSDeep / Context Triggered Piecewise Hashing
A helper class for hashing passwords using hashes. Uses PBKDF2WithHmacSHA1 by default.
Java version from Arash Partow's collection of hash function libraries