1* XEP-0027: Current Jabber OpenPGP Usage
 2* XEP-0030: Service Discovery
 3* XEP-0045: Multi-User Chat
 4* XEP-0048: Bookmarks
 5* XEP-0084: User Avatar
 6* XEP-0085: Chat State Notifications
 7* XEP-0092: Software Version
 8* XEP-0115: Entity Capabilities
 9* XEP-0163: Personal Eventing Protocol (avatars and nicks)
10* XEP-0166: Jingle (only used for file transfer)
11* XEP-0172: User Nickname
12* XEP-0184: Message Delivery Receipts (reply only)
13* XEP-0191: Blocking command
14* XEP-0198: Stream Management
15* XEP-0199: XMPP Ping
16* XEP-0234: Jingle File Transfer
17* XEP-0237: Roster Versioning
18* XEP-0245: The /me Command
19* XEP-0249: Direct MUC Invitations (receiving only)
20* XEP-0260: Jingle SOCKS5 Bytestreams Transport Method
21* XEP-0261: Jingle In-Band Bytestreams Transport Method
22* XEP-0280: Message Carbons
23* XEP-0308: Last Message Correction
24* XEP-0313: Message Archive Management
25* XEP-0319: Last User Interaction in Presence
26* XEP-0333: Chat Markers
27* XEP-0352: Client State Indication
28* XEP-0357: Push Notifications
29* XEP-0363: HTTP File Upload
30* XEP-0368: SRV records for XMPP over TLS
31* XEP-0377: Spam Reporting 
32* XEP-0384: OMEMO Encryption