python-nbxmpp: python-nbxmpp (Non blocking Jabber/XMPP module)
python-nbxmpp: 
python-nbxmpp: This library is a fork of xmpppy, but using non-blocking sockets.
python-nbxmpp: Features:
python-nbxmpp: - Asynchronous
python-nbxmpp: - Supports ANONYMOUS, EXTERNAL, GSSAPI, SCRAM-SHA-1, DIGEST-MD5,
python-nbxmpp:   PLAIN, and X-MESSENGER-OAUTH2 authentication mechanisms.
python-nbxmpp: - Supports connection via proxies
python-nbxmpp: - Suppors TLS
python-nbxmpp: - Supports BOSH (XEP-0124)
python-nbxmpp: - Support Stream Managemen (XEP-0198)