* XEP-0027: Current Jabber OpenPGP Usage
* XEP-0030: Service Discovery
* XEP-0045: Multi-User Chat
* XEP-0048: Bookmarks
* XEP-0115: Entity Capabilities
* XEP-0138: Stream Compression
* XEP-0163: Personal Eventing Protocol (avatars and nicks)
* XEP-0166: Jingle (only used for file transfer)
* XEP-0184: Message Delivery Receipts (reply only)
* XEP-0198: Stream Management
* XEP-0234: Jingle File Transfer
* XEP-0237: Roster Versioning
* XEP-0249: Direct MUC Invitations (receiving only)
* XEP-0260: Jingle SOCKS5 Bytestreams Transport Method
* XEP-0261: Jingle In-Band Bytestreams Transport Method
* XEP-0280: Message Carbons
* XEP-0333: Chat Markers
* XEP-0352: Client State Indication
