Top 20 NuGet bidirectional Packages

A simple .NET Core WebSocket-based library for bidirectional, reliable and typesafe communication between a server and clients behind a firewall. See https://github.com/Xenoage/RpcLib for documentation and samples.
ADN.DataStructures is a cross-platform open-source library which provides data structures utilities to .NET developers
VivaldiSoft.Collections is a cross-platform open-source library which provides data structures utilities to .NET developers