Cryptix Standard Cryptographic Algorithm Naming - Introduces a system to enumerate and give standard reference identifiers for cryptographic algorithms with sufficient detail that independent implementations will be able to interoperate.
General Hash Function Algorithms - General hash function algorithm implementations for string hashing in the object pascal, c and c++ programming languages.
Kremlin by Mach 5 Software - A description of various cryptographic algorithms and a commercial suite of encryption software.
Provably secure protocols - A list of published provably secure key establishment and mutual authentication protocols.
Steve's Encryption Forums - Hosted by Steves-Homepage and features Chat forums discussing encryption systems and algorithms across europe and the rest of the world - requires registration and login.
Teutoburgo: OTP4U - Includes a Java crypto-tool that allows the users to easily exchange a random key between them and then use it as a key for a One Time Pad cipher.