Taking a second look at Etherpad
I watched this video today, after speaking to some of the govuk people at MonkiGras - they've been using an in house tool called the Meeting-o-Tron to track who's doing what after meetings, by letting anyone edit the notes in realtime.
At my previous employer, we spend an age trying to get etherpad running reliably on our own servers, so hearing that it's been massively simplified, and is now in a single language is fantastic news.