RFC 6120: Extensible Messaging and Presence Protocol (XMPP): Core
RFC 6121: Extensible Messaging and Presence Protocol (XMPP): Instant Messaging and Presence
RFC 7622: Extensible Messaging and Presence Protocol (XMPP): Address Format
RFC 7395: An Extensible Messaging and Presence Protocol (XMPP) Subprotocol for WebSocket
(Only listing historical and standard tracks extensions with status ‘Draft’ or ‘Final’ that are applicable to XMPP clients)
XEP-0004: Data Forms 2.9
XEP-0009: Jabber-RPC 2.2
XEP-0012: Last Activity 2.0
XEP-0013: Flexible Offline Message Retrieval 1.2
XEP-0030: Service Discovery 2.5rc3
XEP-0033: Extended Stanza Addressing 1.2.1
XEP-0045: Multi-User Chat 1.31
XEP-0047: In-Band Bytestreams 2.0
XEP-0048: Bookmarks 1.1
XEP-0049: Private XML Storage 1.2
XEP-0050: Ad-Hoc Commands
XEP-0054: vcard-temp 1.2
XEP-0055: Jabber Search 1.3
XEP-0059: Result Set Management 1.0
XEP-0060: Publish-Subscribe 1.15.1
XEP-0065: SOCKS5 Bytestreams 1.8.1
XEP-0066: Out of Band Data 1.5
XEP-0070: Verifying HTTP Requests via XMPP 1.0.1
XEP-0072: SOAP Over XMPP 1.0
XEP-0077: In-Band Registration 2.4
XEP-0079: Advanced Message Processing 1.2
XEP-0080: User Location 1.9
XEP-0084: User Avatar 1.1.1
XEP-0085: Chat State Notifications 2.1
XEP-0092: Software Version 1.1
XEP-0106: JID Escaping 1.1.1
XEP-0107: User Mood 1.2
XEP-0108: User Activity 1.3
XEP-0114: Jabber Component Protocol 1.6
XEP-0115: Entity Capabilities 1.5.1
XEP-0118: User Tune 1.2
XEP-0122: Data Forms Validation 1.0.1
XEP-0124: Bidirectional-streams Over Synchronous HTTP (BOSH) 1.11.1
XEP-0131: Stanza Headers and Internet Metadata 1.2
XEP-0138: Stream Compression 2.0
XEP-0141: Data Forms Layout 1.0
XEP-0144: Roster Item Exchange 1.1.1
XEP-0145: Annotations 1.0
XEP-0152: Reachability Addresses 1.0
XEP-0153: vCard-Based Avatars 1.1
XEP-0155: Stanza Session Negotiation
XEP-0156: Discovering Alternative XMPP Connection Methods 1.1.2
XEP-0158: CAPTCHA Forms
XEP-0163: Personal Eventing Protocol 1.2
XEP-0166: Jingle
XEP-0167: Jingle RTP Sessions
XEP-0171: Language Translation 1.1.1
XEP-0172: User Nickname 1.1
XEP-0174: Serverless Messaging
XEP-0176: Jingle ICE-UDP Transport Method
XEP-0177: Jingle Raw UDP Transport Method
XEP-0184: Message Delivery Receipts 1.2
XEP-0191: Blocking Command 1.3
XEP-0198: Stream Management 1.5.2
XEP-0199: XMPP Ping 2.0
XEP-0202: Entity Time 2.0
XEP-0203: Delayed Delivery 2.0
XEP-0206: XMPP Over BOSH 1.4
XEP-0221: Data Forms Media Element 1.0
XEP-0224: Attention 1.0
XEP-0229: Stream Compression with LZW
XEP-0231: Bits of Binary
XEP-0249: Direct MUC Invitations 1.2
XEP-0256: Last Activity in Presence 1.1
XEP-0258: Security Labels in XMPP 1.1
XEP-0260: Jingle SOCKS5 Bytestreams Transport Method
XEP-0261: Jingle In-Band Bytestreams Transport Method
XEP-0262: Use of ZRTP in Jingle RTP Sessions
XEP-0266: Codecs for Jingle Audio
XEP-0293: Jingle RTP Feedback Negotiation
XEP-0294: Jingle RTP Header Extensions Negotiation
XEP-0297: Stanza Forwarding 1.0
XEP-0301: In-Band Real Time Text 1.0
XEP-0308: Last Message Correction 1.0
XEP-0319: Last User Interaction in Presence 1.0.2
XEP-0368: SRV records for XMPP over TLS
Supported deprecated and experimental XEPs:
XEP-0016: Privacy Lists 1.7
XEP-0020: Feature Negotiation 1.6
XEP-0071: XHTML-IM 1.5.4
XEP-0095: Stream Initiation 1.2
XEP-0096: SI File Transfer 1.3
XEP-0186: Invisible Command 0.13
XEP-0280: Message Carbons 0.9
XEP-0300: Use of Cryptographic Hash Functions in XMPP 0.5.3
XEP-0335: JSON Containers 0.1
Additionally following informational XEP documents are respected:
XEP-0068: Field Standardization for Data Forms 1.2
XEP-0082: XMPP Date and Time Profiles 1.1
XEP-0083: Nested Roster Groups 1.0
XEP-0126: Invisibility 1.1
XEP-0128: Service Discovery Extensions 1.0
XEP-0149: Time Periods 1.0
XEP-0170: Recommended Order of Stream Feature Negotiation 1.0
XEP-0175: Best Practices for Use of SASL ANONYMOUS 1.2
XEP-0201: Best Practices for Message Threads 1.0
XEP-0205: Best Practices to Discourage Denial of Service Attacks 1.0
XEP-0222: Persistent Storage of Public Data via PubSub 1.0
XEP-0223: Persistent Storage of Private Data via PubSub 1.0