lz4net by: Milosz Krajewski

LZ4 is lossless compression algorithm, sacrificing compression ratio for compression/decompression speed. Its compression speed is ~400 MB/s per core while decompression speed reaches ~2 GB/s, not far from RAM speed limits. LZ4net brings LZ4 to all (most?) .NET platforms: .NET 2.0+, .NET Core, Mono, Windows Phone, Xamarin.iOS, Xamarin.Android and Silverlight

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

Magicodes.EPPlus by: Magicodes

Create advanced Excel spreadsheets using .NET

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.

Libuv by: Libuv

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

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.

LibVLCSharp by: VideoLAN

LibVLCSharp is a cross-platform audio and video API for .NET platforms based on VideoLAN's LibVLC Library. It provides a comprehensive multimedia API that can be used across mobile, server and desktop to render video and output audio. Mono, .NET Framework and .NET Core runtimes are supported. This package contains the core features of LibVLCSharp (libvlc loading and initialization, .NET-friendly classes to ease the use of libvlc...). All other `LibVLCSharp.*` packages depend on this one. Features: - Play every media file formats, every codec and every streaming protocols - Run on every platform, from desktop (Windows, Linux, Mac) to mobile (Android, iOS) and TVs - Hardware and efficient decoding on every platform, up to 8K - Network browsing for distant filesystems (SMB, FTP, SFTP, NFS...) and servers (UPnP, DLNA) - Playback of Audio CD, DVD and Bluray with menu navigation - Support for HDR, including tonemapping for SDR streams - Audio passthrough with SPDIF and HDMI, including for Audio HD codecs, like DD+, TrueHD or DTS-HD - Support for video and audio filters - Support for 360 video and 3D audio playback, including Ambisonics - Able to cast and stream to distant renderers, like Chromecast and UPnP renderers. This package also contains the views for the following platforms: - Android - iOS - Mac - tvOS - UWP If you need Xamarin.Forms support, see LibVLCSharp.Forms. LibVLC needs to be installed separately, see VideoLAN.LibVLC.* packages.

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+

Magnum by: Chris Patterson Dru Sellers

Magnum is a library for the larger than average developer

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.

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.