Topic summary
Application protocol

Extracted from the Wikipedia article Application layer.
Examples
- 9P, Plan 9 from Bell Labs distributed file system protocol
- AFP, Apple Filing Protocol
- APPC, Advanced Program-to-Program Communication
- AMQP, Advanced Message Queuing Protocol
- Atom Publishing Protocol
- BEEP, Block Extensible Exchange Protocol
- Bitcoin
- BitTorrent
- CFDP, Coherent File Distribution Protocol
- CoAP, Constrained Application Protocol
- DDS, Data Distribution Service
- DeviceNet
- DNS, Domain Name Services
- eDonkey
- ENRP, Endpoint Handlespace Redundancy Protocol
- FastTrack (KaZaa, Grokster, iMesh)
- Finger, User Information Protocol
- Freenet
- FTAM, File Transfer Access and Management
- FTP, File Transfer Protocol
- Gemini, Gemini protocol
- Gopher, Gopher protocol
- HL7, Health Level Seven
- HTTP, Hypertext Transfer Protocol
- Hypercore, formerly dat://
- H.323, Packet-Based Multimedia Communications System
- IMAP, Internet Message Access Protocol
- IRC, Internet Relay Chat
- IPFS, InterPlanetary File System
- Kademlia
- LDAP, Lightweight Directory Access Protocol
- LPD, Line Printer Daemon Protocol
- MIME (S-MIME), Multipurpose Internet Mail Extensions and Secure MIME
- Modbus
- MQTT Protocol
- Netconf
- NFS, Network File System
- NIS, Network Information Service
- NNTP, Network News Transfer Protocol
- NTCIP, National Transportation Communications for Intelligent Transportation System Protocol
- NTP, Network Time Protocol
- OSCAR, AOL Instant Messenger Protocol
- POP, Post Office Protocol
- PNRP, Peer Name Resolution Protocol
- RDP, Remote Desktop Protocol
- RELP, Reliable Event Logging Protocol
- RFB, Remote Framebuffer Protocol
- Rlogin, Remote Login in UNIX Systems
- RPC, Remote Procedure Call
- RTMP, Real Time Messaging Protocol
- RTP, Real-time Transport Protocol
- RTPS, Real Time Publish Subscribe
- RTSP, Real Time Streaming Protocol
- SAP, Session Announcement Protocol
- SDP, Session Description Protocol
- SIP, Session Initiation Protocol
- SLP, Service Location Protocol
- SMB, Server Message Block
- SMTP, Simple Mail Transfer Protocol
- SNTP, Simple Network Time Protocol
- SSH, Secure Shell
- SSMS, Secure SMS Messaging Protocol
- TCAP, Transaction Capabilities Application Part
- TDS, Tabular Data Stream
- Tor (anonymity network)
- Tox
- TSP, Time Stamp Protocol
- VTP, Virtual Terminal Protocol
- Whois (and RWhois), Remote Directory Access Protocol
- WebDAV
- WebRTC
- WebSocket
- X.400, Message Handling Service Protocol
- X.500, Directory Access Protocol (DAP)
- XMPP, Extensible Messaging and Presence Protocol
- Z39.50