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

LiteDB by: Maurício David

LiteDB - A lightweight embedded .NET NoSQL document store in a single datafile Signed by signpath.io from repository 'https://github.com/mbdavid/LiteDB' commit '391cc9318c5be6e56cb71b3ce14b1ed9cb324763' (see contained AppVeyorSettings.json file for build settings).

LinqBridge by: Atif Aziz

With Visual Studio's multi-targeting and LINQBridge, you can write LINQ to Objects (local) queries using the full power of the C# 3.0 compiler and yet create programs that require only Microsoft .NET Framework 2.0. LINQBridge is a re-implementation of all the standard query operators introduced with Microsoft .NET Framework 3.5's System.Linq.Enumerable class.

LightInject.Source by: Bernhard Richter

An ultra lightweight Inversion of Control container for the .Net framework. See LightInject.Source for the source distribution.

Longbow.PetaPoco by: Argo Zhang(argo@163.com)

A Tiny ORMish thing for your POCO's.

LiveCharts.Wpf by: Beto Rodriguez

Simple, flexible, interactive and powerful data visualization for Wpf

Longbow.Cronos by: Andrey Dorokhov Sergey Odinokov

A fully-featured .NET library for parsing Cron expressions and calculating next occurrences that was designed with time zones in mind and correctly handles daylight saving time transitions.

Lucene.Net by: The Apache Software Foundation

Lucene.Net is a full-text search engine library capable of advanced text analysis, indexing, and searching. It can be used to easily add search capabilities to applications. Lucene.Net is a C# port of the popular Java Lucene search engine framework from The Apache Software Foundation, targeted at .NET Framework and .NET Core users.

Longbow.Configuration by: Argo Zhang(argo@163.com)

Longbow Component for .net core 2.0+ & .net framework 4.5+

log4stash by: urielha

log4stash is a log4net appender for easy logging of exceptions and messages to Elasticsearch indices. You can configure few filters to analyze log events before they got sended to Elasticsearch similar to the filters on logstash.

LightInject by: Bernhard Richter

An ultra lightweight Inversion of Control container for the .Net framework. See LightInject.Source for the source distribution.

Longbow.ComponentModel by: Argo Zhang(argo@163.com)

Longbow Component for .net core 2.0+ & .net framework 4.5+

Lucene.Net.Analysis.Common by: The Apache Software Foundation

Analyzers for indexing content in different languages and domains for the Lucene.NET full-text search engine library from The Apache Software Foundation. Documentation: https://lucenenet.apache.org/docs/4.8.0-beta00016/api/analysis-common/overview.html This package is part of the Lucene.NET project: https://www.nuget.org/packages/Lucene.Net/4.8.0-beta00016

Longbow.Logging by: Argo Zhang(argo@163.com)

Longbow Component for .net core 2.0+ & .net framework 4.5+

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.

Longbow.Tasks by: Argo Zhang(argo@163.com)

Longbow Component for .net core 2.0+ & .net framework 4.5+

Longbow by: Argo Zhang(argo@163.com)

Longbow Component for .net core 2.0+ & .net framework 4.5+

LiveCharts by: Beto Rodriguez

Simple, flexible, interactive and powerful data visualization for .Net

Longbow.Security.Cryptography by: Argo Zhang(argo@163.com)

Longbow Component for .net core 2.0+ & .net framework 4.5+

log4net.Ext.Json by: Robert Cutajar Grzegorz Dziadkiewicz

Enable JSON logging in log4net.