pgpry is a Pthreads-based password recovery program for private OpenPGP keys. It reads private key data from stdin and performs a brute-force attack in order to recover the pass phrase. Numerous options for restricting the key space are offered, including regular expression filtering and prefix/suffix filters.
Industria is a collection of portable R6RS Scheme libraries for cryptography (AES, DES, Blowfish, HMAC, MD5, SHA-1, SHA-2, RSA, DSA, etc.), zip/gzip/zlib decompression, disassembly of amd64 machine code, Off-The-Record messaging, bytevector pack/unpack syntax, TLS connections via custom binary ports, and more.