jQuery.Validation by: Jörn Zaefferer

This jQuery plugin makes simple clientside form validation trivial, while offering lots of option for customization. That makes a good choice if you’re building something new from scratch, but also when you’re trying to integrate it into an existing application with lots of existing markup. The plugin comes bundled with a useful set of validation methods, including URL and email validation, while providing an API to write your own methods. All bundled methods come with default error messages in english and translations into 32 languages. NOTE: This package is maintained on behalf of the library owners by the NuGet Community Packages project at http://nugetpackages.codeplex.com/

JSNLog by: Mattijs Perdeck

JavaScript logging package that lets you log exceptions, AJAX timeouts and other client side events in your server side log. Supports .Net Core 2.0+ only. For ASP.NET 4.x (.Net 4.5.2+), install version 2.30.0 of this package.

JSNLog.Log4Net by: Matt Perdeck

Log JavaScript errors and other client side events in your Log4Net server side log. Installs JSNLog and configures it for use with Log4Net. Use with ASP.NET 4.x.

JsonSubTypes by: Emmanuel Counasse

Discriminated Json Subtypes Converter implementation for .NET

K4os.Compression.LZ4 by: Milosz Krajewski

Port of LZ4 compression algorithm for .NET

K4os.Compression.LZ4.Streams by: Milosz Krajewski

Port of LZ4 compression algorithm for .NET

K4os.Hash.xxHash by: Milosz Krajewski

xxHash hash implementation for .NET

knockoutjs by: The Knockout.js team

A JavaScript MVVM library to help you create rich, dynamic user interfaces with clean maintainable code

LazyCache by: https://github.com/alastairtree

Lazy cache is a simple, thread safe, in-memory caching library that makes it easy to add high performance caching to your dotnet app.

LibSassBuilder by: Johan van Rensburg

Compile Sass files to css on project build.

Libuv by: Libuv

Multi-platform support library with a focus on asynchronous I/O.

LinqKit.Core by: Joseph Albahari Tomas Petricek Scott Smith Tuomas Hietanen Stef Heyenrath

LinqKit.Core contains extensions for LINQ to SQL and Entity Framework. Note that Include(...), IAsync and IDbAsync are not supported.

LiteX.HealthChecks.AzureKeyVault by: Ashish Patel

AzureKeyVault health checks package used to check the status of a Azure KeyVault service in .NET 5, .NET Core, .NET Standard based applications. LiteXHealthChecks is very small yet powerful and high-performance library used to check the status of a component in the application, such as a backend service, database or some internal state.

LiteX.HealthChecks.AzureServiceBus by: Ashish Patel

AzureServiceBus health checks package used to check the status of a Azure ServiceBus (queue and topic) in .NET 5, .NET Core, .NET Standard based applications. LiteXHealthChecks is very small yet powerful and high-performance library used to check the status of a component in the application, such as a backend service, database or some internal state.

log4net by: The Apache Software Foundation

log4net is a tool to help the programmer output log statements to a variety of output targets. In case of problems with an application, it is helpful to enable logging so that the problem can be located. With log4net it is possible to enable logging at runtime without modifying the application binary. The log4net package is designed so that log statements can remain in shipped code without incurring a high performance cost. It follows that the speed of logging (or rather not logging) is crucial. At the same time, log output can be so voluminous that it quickly becomes overwhelming. One of the distinctive features of log4net is the notion of hierarchical loggers. Using these loggers it is possible to selectively control which log statements are output at arbitrary granularity. log4net is designed with two distinct goals in mind: speed and flexibility

MailChimp.Net.V3 by: Brandon Seydel

A .NET Wrapper for Mail Chimp v3.0 API

MediatR by: Jimmy Bogard

Simple, unambitious mediator implementation in .NET

MediatR.Behaviors.Authorization by: Austin Davies

A simple request authorization package that allows you to build and run request specific authorization requirements before your request handler is called.

MediatR.Contracts by: Jimmy Bogard

Contracts package for requests, responses, and notifications

MediatR.Extensions.Microsoft.DependencyInjection by: Jimmy Bogard

MediatR extensions for ASP.NET Core