I'm planning on releasing the latest version of chavatar web-based IRC client later tonight, when I'm in front of my PGP key. But, for now, there's a demo instance up and running - use username and password "demotar". It can't /join or /part channels, or change its password, due to being in demo mode, but it's enough to get a feel for it. It's running in #demotar on irc.freenode.net, if you want to see it talk.
FOAF updates: Trust rankings are now exported, making the data available to other users and websites. An external FOAF URI has been added, allowing users to link to an additional FOAF file.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!