Next Generation of ShadowsocksX
UFONet - Denial of Service Toolkit
antigift is simple cross-platform, files & folders encryption tool
C++ cryptographic library (modern hash functions, ciphers, KDFs)
Open Source PKI solutions
FIDO strong authentication, encryption, digital signature engine
Encrypting, anonymous, unlimited size message transfer system
this simple program implements the Vigenere cipher in python
Kerberized Messaging Toolkit for Java
partitioning backup recovery and all kind of boot loaders