Top 20 NuGet ReST Packages

This is the core support library for HL7's FHIR standard (http://hl7.org/fhir). It contains the core functionality to working with RESTful FHIR servers: POCO classes for FHIR, parsing/serialization of FHIR data and a FhirClient for easy access to FHIR servers.
Twilio REST API helper library
Get started with Visma.net Integrations.
Chilkat .NET Core Class Library
Client for the GoCardless API - a powerful, simple solution for the collection of recurring bank-to-bank payments
A client library for Analyze Re high performance analytics services
A .NET SDK to make voice calls & send SMS using Plivo and to generate Plivo XML
Chilkat .NET Class Library (32-bit) for SSH/SFTP, FTP, 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, ...
GoogleAnalyticsTracker for ASP.NET Web API. GoogleAnalyticsTracker was created to have a means of tracking specific URL's directly from C#. For example, it enables you to log API calls to Google Analytics.
GoogleAnalyticsTracker for ASP.NET Web API. GoogleAnalyticsTracker was created to have a means of tracking specific URL's directly from C#. For example, it enables you to log API calls to Google Analytics.
A library extensions to simplify HTTP usage.
GoogleAnalyticsTracker was created to have a means of tracking specific URL's directly from C#. For example, it enables you to log API calls to Google Analytics.
GoogleAnalyticsTracker for NancyFx. GoogleAnalyticsTracker was created to have a means of tracking specific URL's directly from C#. For example, it enables you to log API calls to Google Analytics.
GoogleAnalyticsTracker for OWIN. GoogleAnalyticsTracker was created to have a means of tracking specific URL's directly from C#. For example, it enables you to log requests to Google Analytics.
Restores Newtonsoft.JSON as the default serializer for RestSharp.
Implements v2.0 of the Open API Specification (https://www.openapis.org). Open API is a specification and complete framework implementation for describing, producing, consuming, and visualizing RESTful web services.
A fluent, portable, testable HTTP client library.
This is the Flurl.Http package, repackaged with strongly named assemblies. See https://flurl.io/ for the official project.
This is a .NET Framework enhancement framework. Main features are Versioning, Finance, Currency, Foreign Exchange, Money, Pricing strategy, Telemetry, Composite Weighted Progress, Repository and Unity of Wok pattern implementation with Entity Framework Core, Network Connectivity Service and Triggeri...
ServiceStack is a simple and fast alternative to WCF, MVC and Web API in one cohesive framework for all your services and web apps that's intuitive and Easy to use! To get started see: https://servicestack.net/getting-started