| Subject | Italian | English |
| commun., IT | Internet relay chat | Internet Relay Chat |
| comp., MS | Relay Server | relay server (A server that manages the exchange of messages or information among different users) |
| comp., MS | relay Teredo | Teredo relay (An IPv6/IPv4 router that can forward packets between Teredo clients on the IPv4 Internet (using a Teredo tunneling interface) and IPv6-only hosts) |