The following XEPs.
XEP-0206: XMPP Over BOSH
XEP-0085: Chat state notification.
XEP-0184: Message Delivery Receipts.
XEP-0198: Stream Management
XEP-0136: Message Archiving
XEP-0313: Message Archive Management
XEP-0048: Bookmarks
XEP-0080: User Location
XEP-0127: Common Alerting Protocol (CAP) Over XMPP
XEP-0224: Attention
XEP-0153: vCard-Based Avatars
Thanks, Best regards