SandiaLabs 

Arcus is a C# manipulation library for calculating, parsing, formatting, converting, and comparing both IPv4 and Pv6 addresses and subnets. It accounts for 128-bit numbers on 32-bit platforms.

Gulliver is a C# utility package and library engineered for the manipulation of arbitrary sized byte arrays accounting for appropriate endianness and jagged byte length. Functionality includes the as previously unsupported standard set of boolean algebraic operations, bitwise shifting, and unsigned... More information