Similar to Telnet

RFC 2322

Hyper Text Coffee Pot Control Protocol

Real-Time Streaming Protocol

Virtual Router Redundancy Protocol

Mailto

IP Payload Compression Protocol

VCard

Point-to-Point Protocol over Ethernet

WebDAV

Year 10,000 problem

Internet Printing Protocol

CAST-256

Diffie–Hellman key exchange

S/MIME

Point-to-Point Tunneling Protocol

Secure Hypertext Transfer Protocol

Simple public-key infrastructure

Common Open Policy Service

H.248

Session Announcement Protocol

MISTY1

Sieve (mail filtering language)

6to4

Realm-Specific IP

CAdES (computing)

SHA-1

SFlow

VCDIFF