CommunityToolkit.Mvvm by: Microsoft

This package includes a .NET MVVM library with helpers such as: - ObservableObject: a base class for objects implementing the INotifyPropertyChanged interface. - ObservableRecipient: a base class for observable objects with support for the IMessenger service. - ObservableValidator: a base class for objects implementing the INotifyDataErrorInfo interface. - RelayCommand: a simple delegate command implementing the ICommand interface. - AsyncRelayCommand: a delegate command supporting asynchronous operations and cancellation. - WeakReferenceMessenger: a messaging system to exchange messages through different loosely-coupled objects. - StrongReferenceMessenger: a high-performance messaging system that trades weak references for speed. - Ioc: a helper class to configure dependency injection service containers.

ConcurrentHashSet by: Bar Arnon

A thread-safe hash-based set

Confluent.Kafka by: Confluent Inc. Andreas Heider

Confluent's .NET Client for Apache Kafka

Consul by: Consul

Package Description

CoreCompat.System.Drawing by: CoreCompat.System.Drawing

CoreCompat.System.Drawing

coverlet.collector by: tonerdo

Coverlet is a cross platform code coverage library for .NET, with support for line, branch and method coverage.

CronExpressionDescriptor by: Brady Holt

A library that converts cron expressions into human readable descriptions. Supports multiple languages including: English, Brazillian, Spanish, Norwgian, Turkish, Dutch, Chinese Simplified, Russian, French, German, Ukrainian, Persian (Farsi), Polish, Romanian, Italian, Swedish, Slovenian, Danish, Finnish, Greek, Kazakh, Kyrgyz and Japanese.

Dapper by: Sam Saffron Marc Gravell Nick Craver

A high performance Micro-ORM supporting SQL Server, MySQL, Sqlite, SqlCE, Firebird etc..

Dapper.Contrib by: Sam Saffron Johan Danforth

The official collection of get, insert, update and delete helpers for dapper.net. Also handles lists of entities and optional "dirty" tracking of interface-based entities.

DH.NCode by: 湖北登灏科技有限公司

高性能 .NET 数据中间件（超级ORM），聚焦添删改查与海量数据，内置多级缓存、自动迁移、分表分库、强类型查询与跨库迁移。

DH.NCore by: 湖北登灏科技有限公司

Core library of NewLife framework. Provides high-performance infrastructure for building scalable applications: logging (file/network), configuration (XML/JSON/HTTP), cache (memory/distributed), network (TCP/UDP/HTTP/WebSocket), serialization (binary/XML/JSON), APM tracing, IoC container, actor model, timer scheduler, plugin framework, and more. Supports .NET Framework 4.5 to .NET 10. 核心组件库，为构建可扩展应用程序提供高性能基础设施。提供日志（文件/网络）、配置（XML/JSON/HTTP）、缓存（内存/分布式）、网络（TCP/UDP/HTTP/WebSocket）、序列化（Binary/XML/JSON）、APM性能追踪、对象容器、并行模型、定时调度、插件框架等。支持.NET Framework 4.5至.NET 10全版本。

diskann-garnet by: Microsoft

DiskANN FFI and Data Provider for Garnet

DnsClient by: MichaCo

DnsClient.NET is a simple yet very powerful and high performance open source library for the .NET Framework to do DNS lookups

DynamicData by: Roland Pheasant

Bring the power of Rx to collections using Dynamic Data. Dynamic Data is a comprehensive caching and data manipulation solution which introduces domain centric observable collections. Linq extensions enable dynamic filtering, sorting, grouping, transforms, binding, pagination, data virtualisation, expiration, disposal management plus more.

Elasticsearch.Net by: Elastic and contributors

Elasticsearch.Net

EMGU.CV by: Emgu Corporation

Emgu CV is a cross platform .Net wrapper to the OpenCV image processing library. Allowing OpenCV functions to be called from .NET compatible languages such as C#, VB, VC++, IronPython etc.

EntityFramework by: Microsoft

Entity Framework 6 (EF6) is a tried and tested object-relational mapper for .NET with many years of feature development and stabilization.

Enums.NET by: Tyler Brinkley

Enums.NET is a high-performance type-safe .NET enum utility library

EnyimMemcachedCore by: cnblogs.com

EnyimMemcachedCore is .NET Core client library for memcached. Usage: services.AddEnyimMemcached(options => options.AddServer(serverNameOrIP, 11211)); Then add IMemcachedClient into constructor. Use app.UseEnyimMemcached() to warm up.

EPPlus.Core by: Vahid Nasiri

EPPlus.Core is an unofficial port of the EPPlus library to .NET Core.