Top 20 NuGet protocol Packages

Provides support for serializing and deserializing JSON-RPC 2.0 messages
Library for parsing and generating standard synchrophasor protocol data streams
Library of network protocol implementations (e.g., FTP)
The Sentry Protocol used to communicate with Sentry - Open-source error tracking that helps developers monitor and fix crashes in real time.
A library for serializing ADO.NET DataTables and DataReaders into an efficient, portable binary format. Uses Marc Gravell's Google Protocol Buffers library, protobuf-net.
C# runtime library for Protocol Buffers - Google's data interchange format.
A declarative serialization framework for controlling formatting of data using field bindings.
See project site for more info.
A .NET implementation of the Language Server Protocol
NuGet Protocol for 3.1.0 servers
Primitives for working with JsonRpc. This library is used as the base for communication with language servers
LINQ-enabled client API for issuing OData queries and consuming OData JSON payloads. Supports OData v4. Targets .NET 4.5 and .NET Platform Standard 1.1. OData .NET library is open source at http://github.com/OData/odata.net. Documentation for the library can be found at https://odata.github.io/odata...
Classes to serialize, deserialize and validate OData JSON payloads. Supports OData v4. Enables construction of OData services and clients. Targets .NET Platform Standard 1.1. OData .NET library is open source at http://github.com/OData/odata.net. Documentation for the library can be found at https:/...
Classes to represent, construct, parse, serialize and validate entity data models. Supports OData v4. Targets .NET Platform Standard 1.1. OData .NET library is open source at http://github.com/OData/odata.net. Documentation for the library can be found at https://odata.github.io/odata.net.
Contains classes and methods that facilitate geography and geometry spatial operations. Targets .NET Platform Standard 1.1. OData .NET library is open source at http://github.com/OData/odata.net. Documentation for the library can be found at https://odata.github.io/odata.net.
NuGet's protocol-level base types used for connecting to API v2 and API v3 repositories.
Transport model in DotNetty
General purpose codecs for DotNetty
Application handlers for DotNetty
Provides Protocol Buffer Parser and Listener assets which build a subset of the Abstract Syntax Tree (AST) Descriptors.