アプリケーション層
SDP, Session Description Protocol
SIP, Session Initiation Protocol
SLP, Service Location Protocol
SMB, Server Message Block
SMTP, Simple Mail Transfer Protocol
SNMP Simple Network Management Protocol
SNTP, Simple Network Time Protocol
SOAP
RDP, Remote Desktop Protocol
SSH, Secure Shell
TCAP, Transaction Capabilities Application Part
TDS, Tabular Data Stream
TELNET, Terminal Emulation Protocol of TCP/IP
TFTP, Trivial File Transfer Protocol
TSP, Time Stamp Protocol
VTP, Virtual Terminal Protocol
Waka (protocol), an HTTP replacement protocol
Whois (and RWhois), Remote Directory Access Protocol
WebDAV
X.400, Message Handling Service Protocol
X.500, Directory Access Protocol (DAP)
XMPP, Extensible Messaging and Presence Protocol