g-research 

ParquetSharp is a .NET library for reading and writing Parquet files. It's implemented in C# as a PInvoke wrapper around apache-parquet-cpp to provide high performance and compatibility.

Type equalities for F#. These equalities allow us to create type-safe abstractions by allowing us to encode Generalised Algebraic Data Types (GADTs), as found in languages like Haskell.

F# library for dealing with value types with the specific goal of writing allocation free F# code