Top 20 NuGet immutable Packages

This library uses and abuses the features of C# to provide a functional 'Base class library', that, if you squint, can look like extensions to the language itself.
Get all the common units of measurement and the conversions between them. It is light-weight and thoroughly tested.
Package Description
Javascript actor library that works with LanguageExt.Core and Echo.Process: A library that uses and abuses the features of C# 6 to provide a functional 'Base class library', that, if you squint, can look like extensions to the language itself. It also includes an 'Erlang like' process system (actors...
Actor library component that works with LanguageExt.Core and Echo.Process: A library that uses and abuses the features of C# 6 to provide a functional 'Base class library', that, if you squint, can look like extensions to the language itself. It also includes an 'Erlang like' process system (actors)...
echo-process Actor library component that works with LanguageExt.Core: An 'Erlang like' process system (actors) that can optionally persist messages and state to Redis (note you can use it without Redis for in-app messaging). The process system additionally supports Rx streams of messages and state ...
Various classes related to immutability.
WebSocket client support (via Owin) for the Echo.Process system.
Design and build-time code-gen for records, unions, lenses and immutable With functions
Support for Reactive Extensions overloads for various types in the LanguageExt.Core
Parser combinators library based on Haskell Parsec. This is part of the LanguageExt functional base class library and requires LanguageExt.Core
For C#/VB Universal Windows code (UWP), use UnitsNet instead. This is a Windows Runtime Component with reduced functionality to support all UWP languages, such as JavaScript and C++, and other runtime components.
Helper library for LanguageExt.Core that facilitates conversion between F# native types like Option, Map, List, etc to .NET and Language Ext types.
C# library to create new immutable object applying lambda expressions to the existing immutable object
A simplified mapper that also works with immutable types.
C# 9.0/.NET 5.0 template for model generated immutable records.
C# 9.0/.NET 5.0 template for model generated polymorphic records.
Extremely fast binary serializer with tons of features. Full reference persistence (including circular references), polymorphism, zero-allocations, can handle readonly fields, delegates, 'KnownTypes' list for whitelisting and optimization in network scenarios... checkout the github page for a ...
Reactive-Redux is a predictable state container for .NET apps. Modified from Guillaume Salles https://github.com/GuillaumeSalles/redux.NET
An AutoFixture customization that allows AutoFixture to create specimens of the immutable collections found in the System.Collections.Immutable namespace.