ctrulib exposes sockets, so you can do almost any networked communication you want: send files to local printer, VoIP communication, HTTP, FTP, VNC, RDP, etc.Out of curiosity, can you somehow use SQL databases with ctrulib? I'd like to make an online leaderboard for the Snake game I've coded
You just have to implement the protocol used. SQL databases all have pretty complicated protocols, and I wouldn't recommend putting that in your homebrew, it's unnecessary and would bloat your homebrew filesize. Just expose database access using some web API, like a simple PHP script you can query.