These are some options for real-time updates of the browser view of a list.
|Meteor||Yes||Inappropriate for private sites since any client can read any notice|
|Cometd||Yes||Don't use anywhere but on a private network; anyone can push notices to a Cometd server|
|APE||No...?||If this supports Bayeux, may work with Cometd plugin|
|XMPP||No||Possible to create a plugin that uses BOSH, anonymous accounts on the Web server, PubSub and http://code.stanziq.com/strophe/ to make XMPP work as a technology for real-time updates|
|Frozen Mountain||No||Commercial service for realtime; would be useful for sites who can't set up their own realtime server. Seems to support a modified version of Bayeux, so Cometd plugin could be adapted or reused.|
|Tornado||No||Realtime server created by Friendfeed. Seems to be more of a high-parallelization server like Twisted than others in this list. May be useful, though.|
|Orbited||No||Probably would need to use the STOMP subsystem, which seems kind of hard|