jabber-caps-browser is an addon to jabber.el, the Emacs Jabber client. It offers a visual presentation of the features supported by the Jabber clients that your contacts use.
This is all based on information received through XEP-0115: Entity Capabilities.
To install it, clone or download the repository, type M-x package-install-file in Emacs and type the path to the jabber-caps-browser.el file. It requires GNU Emacs 24 and a recent version of jabber.el.
Screenshots
My client currently knows about a few different pieces of software:
![[screenshot]](images/caps-1-by-software-name.png)
It knows about one version of Gajim, and can list its features:
![[screenshot]](images/caps-2-software-features.png)
It knows about two versions of Adium. There is a list of features common to all of them, and a list of unique features:
![[screenshot]](images/caps-3-compare-versions.png)
It can also list all the software versions that support a particular feature:
![[screenshot]](images/caps-4-lookup-by-feature.png)