TLS versus ZRTP
From XMPP Wiki
This page serves for a comparison of features between TLS and ZRTP for various purposes. The main usecase where some would see ZRTP is End-to-End Security with Jingle.
Note that ZRTP and TLS don't match properly. So please include also actions that are usually done with other protocols for TLS and ZRTP, respectively. Relation between ZRTP and SRTP would be included too.
Common Features
Advantages of TLS
Advantages of ZRTP
This is a Technical Page of the XMPP Wiki.