linq2db by: Igor Tkachev, Ilya Chudin, Svyatoslav Danyliv, Dmitry Lukashenko, and others

LINQ to DB is a data access technology that provides a run-time infrastructure for managing relational data as objects.

LiquidTestReports.Core by: Kurt Murrell

Core library for creating custom VS Test loggers with liquid template support

LiquidTestReports.Markdown by: Kurt Murrell

LiquidTestReports.Markdown is a ready to use VSTest Markdown logger that generates GitHub friendly markdown reports from your test results.

LiteDB by: Mauricio David

A simple embedded .NET NoSQL Document Store in a single data file

LiveCharts.Wpf by: Beto Rodriguez

Simple, flexible, interactive and powerful data visualization for Wpf

log4net by: 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

MahApps.Metro by: Jan Karger, Bastian Schmidt, Dennis Daume, Brendan Forster, Alex Mitchell, Paul Jenkins, Jake Ginnivan

The goal of MahApps.Metro is to allow devs to quickly and easily cobble together a 'Modern' UI for their WPF apps (.Net 4.6.2 and later), with minimal effort.

ManagedEsent by: martinc

ManagedEsent provides managed access to ESENT, the embeddable database engine native to Windows. ManagedEsent uses the esent.dll that is part of Microsoft Windows so there are no extra unmanaged binaries to download and install.

Mapster by: chaowlert, eric_swann, andrerav

A fast, fun and stimulating object to object mapper. Kind of like AutoMapper, just simpler and way, way faster.

Mapster.Async by: chaowlert, eric_swann, andrerav

Async supports for Mapster

Mapster.Core by: chaowlert, eric_swann, andrerav

Lightweight library for Mapster and Mapster CodeGen

Mapster.DependencyInjection by: chaowlert, eric_swann, andrerav

Dependency Injection supports for Mapster

Mapster.Tool by: chaowlert, eric_swann, andrerav

Tool to generate object mapping using Mapster

MassTransit by: Chris Patterson

MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.

MassTransit.Abstractions by: Chris Patterson

MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.

MassTransit.Analyzers by: Remco Blok, Chris Patterson

MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.

MassTransit.EntityFrameworkCore by: Chris Patterson

MassTransit Entity Framework Core persistence support; MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.

MassTransit.MongoDb by: Chris Patterson

MassTransit MongoDb persistence support; MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.

MassTransit.Quartz by: Chris Patterson

MassTransit Quartz.NET scheduler support; MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.

MassTransit.RabbitMQ by: Chris Patterson

MassTransit RabbitMQ transport support; MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.