1. PigzA parallel implementation of gzip for modern multi-processor, multi-core machines.
2. ZlibA massively spiffy yet delicately unobtrusive compression library.
3. spoofModify a message to have a desired CRC signature.
4. infgenDeflate disassember to convert a deflate, zlib, or gzip stream into a readable form.
5. crcanyCompute any CRC, a bit at a time, a byte at a time, and a word at a time.