Top 20 NuGet binary Packages

The Connection-Based Asynchronous Messaging (CBAM) SQL.PostgreSQL.Implementation assembly provides implementation and API in order to create connection pools which can create connections to PostgreSQL database backend. A good starting point is PgSQLConnectionPool class.
Simple .Net Standard library for sending and receiving json and bson messages through WebSocket.
CHIMP binary encoder/decoder
BinarySerialize serializer for dependency injection service
Apache Avro™ is a data serialization system. See http://avro.apache.org/ for more info. This release of the Avro library diverges from the official release with modifications by @blachniet.
Provides skeleton implementation and ready solution for typical connection factory class operating on (network) stream..
.NET library extending span data reading and writing functionality.
Effective binary object serialization class library for low-overhead network transmissions
Fast serialize into compressed bits.
Implements the core NETFx ISerializer interface using the .NET framework runtime BinaryFormatter.
xUnit tests for netfx-System.BinarySerializer
Unified algorithm support for indexed .NET collections.
Deprecated. Use the strong named ServiceStack.ProtoBuf package instead.
Free and Open Source fork of NServiceKit.Plugins.ProtoBuf V3 Add the ProtoBuf binary format and endpoint to a NServiceKit web service host.
Free and Open Source fork of NServiceKit.Plugins.MsgPack V3 Add the MsgPack binary format and endpoint to a NServiceKit web service host.
A property convention which sets custom type binary blob
A client library for quickly building smtp/memcache transport protocol communication.
A server library for quickly building smtp/memcache transport protocol communication.
A .NET binary serializer/deserializer library. With bit-level precision provides an easy way to serialize your class objects or primitive types to array of bytes and reverse. It supports complex types/nested classes and it is really easy to adapt your existing code to use this library.