Top 20 NuGet http Packages

Library of ASP.NET web forms extensions, embedded resource hosting and HTTP Module for implementing role-based security.
A fluent, portable, testable HTTP client library.
XML extensions to Flurl.Http
Authentication, in-game commerce, player data, title data, inventory, characters, statistics, leaderboards, analytics and reporting, friends, multiplayer, matchmaking, tournaments, cloud script, trading, real-time event handling, player management, live ops, and server hosting for all major platform...
A Serilog sink sending log events over HTTP.
Lightweight StandAlone Http Mocking Server for .Net.
Lightweight Http Mocking Server for .Net, inspired by WireMock from the Java landscape.
.NET's fastest JSON, JSV and CSV Text Serializers. Fast, Light, Resilient. Contains ServiceStack's high-performance text-processing powers, for more info see: https://github.com/ServiceStack/ServiceStack.Text
Chilkat .NET Core Class Library
App Metrics network health checks.
The F# Data library (FSharp.Data.dll) implements everything you need to access data in your F# applications and scripts. It implements F# type providers for working with structured file formats (CSV, HTML, JSON and XML) and for accessing the WorldBank data. It also includes helpers for parsing CSV, ...
Chilkat .NET Class Library (32-bit) for SSH/SFTP, FTP, CAdES, XAdES, REST, POP3, SMTP, IMAP, SSL/TLS, Zip, REST, OAuth2, HTTP, RSA, XML DSig, Encryption, Compression, XML, Socket, XMP, HTML to XML, JSON, JWT, OAuth1, conversion, PKCS12/PFX, Java Keystore, ASN.1, PEM, ECC, Async, ...
.NET's fastest JSON, JSV and CSV Text Serializers. Fast, Light, Resilient. Contains ServiceStack's high-performance text-processing powers, for more info see: https://github.com/ServiceStack/ServiceStack.Text
Razor view engine support for the Giraffe web framework.
App Metrics HTTP health checks.
A simple caching library to cache any data structure for a specific amount of time in any .NET application. Additionally, offers simple HTTP methods for caching web request data. Powered by FileStore.
App Metrics process health checks.
A tiny, cross-platform, module based, MIT-licensed web server. Supporting NET Framework, Net Core, and Mono.
Provides infrastructure for common error handling, tracing, configuration, and HTTP/REST-based pipeline manipulation for REST clients generated with Hyak.
A native functional ASP.NET Core web framework for F# developers.