soenneker 

A collection of useful string extension methods

A thread-safe random utility library

A collection of helpful ValueTask extension methods

A collection of helpful Task extension methods

An externally initializing singleton that uses double-check asynchronous locking, with optional async and sync disposal

A collection of helpful char extension methods

A collection of helpful IConfiguration extension methods

A collection of helpful Stream extension methods

A collection of regular expressions that are generated at compile time

A collection of helpful enumerable extension methods

A collection of helpful byte[] extension methods

A cache of CultureInfo.GetCultureInfo for en-US.

An easy modern MemoryStream utility

A collection of useful MethodInfo methods

Serializes, deserializes, validates, formats, and writes JSON with System.Text.Json or Newtonsoft.Json.

Detects the current operating system, common hosting environments, and container execution.

Providing thread-safe singleton HttpClients

A collection of common options for System.Text.Json and JSON.net

The .NET Bogus autogenerator

A utility library encapsulating asynchronous file IO operations