kmontrose 

A fail-fast validating helper for .NET CIL generation

A fast JSON serializer and deserializer

A low allocation "type inference compatible" re-implementation of LINQ-to-Objects

A fast JSON serializer and deserializer

Serializes and deserializes to the Feather format (https://github.com/wesm/feather) for interop with Python and R.

A self-describing wrapper around protobuf-net.

A fast, narrowly scoped, string parser generator.

Modern CSV (De)Serializer

Source Generator for Cesil. Allows ahead-of-time generation of (de)serializers, enabling Cesil to be used without runtime code generation.