Spiritbot is a suite of agent/bot applications with an IRC core. The core component interacts with a natural language chat interface (Scheme/LISP) base that parses input natural language (chat) input and then tries to come up with valid responses. The focus of the chat centers on technology.
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.