Common Networking
This library mod aims to unify networking and packet registration between mod loaders so that Developers using Jared's MultiLoader Template only need to deal with networking in the common module. But, it is not limited to only usage with MultiLoader. This can be used in other projects as well.
This also allows your mod to be loader agnostic. The way packets are built and constructed, Forge version of the mod on the client, can talk to the Fabric version on the server. Though you will need to create your own handshake packet.