sgcWebSockets comes in 3 editions: Standard, Professional and Enterprise.

The Standard editions includes all client components (except HTTP/2 client) including WebSocket Client, Telegram, Socket.IO, SignalR Core... Standard edition is a cost-effective solution for developers who need the best connectivity clients.

The Professional edition includes all Standard Components and include Server Components like WebSocket + HTTP Server, Server Protocols to build your own Client / Server full featured applications, DataSnap WebSocket Server and more,

The Enterprise edition includes all Professional Components and include Best Performance Components like HTTP.SYS Server with WebSocket and HTTP/2 support. HTTP/2 Client and Server based on Indy without external dependencies, 100% Delphi code. Latest TLS 1.3 version and more.

Here is the comprehensive list of components included in the sgcWebSockets package for
Delphi / CBuilder / FPC