Awesome

bzip2.net

A pure C# implementation of the bzip2 compressor

Based on the Java implementation by Matthew Francis: https://github.com/MateuszBartosiewicz/bzip2

The compression algorithm doesn't generate randomized blocks, which is already a deprecated option and may not be decoded by modern bzip2 libraries. Other popular .net compression libraries do generate randomized blocks.

Nuget package: nuget.org/packages/bzip2.net, or simply look for bzip2.net in Visual Studio's nuget package manager

DISCLAIMER: Unfortunately, this library has a well-known bug coming from the original implementation, as reported here