If you're a Hubot user and based in London, I've just released https://www.npmjs.com/package/hubot-tube-status to check on the current tube status!
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Many excellent Hubot packages haven't been touched in five years. Is there a newer alternative?
My experience is that group chats, especially in a work context, are hugely enriched with customised bots.
Blogged: Hubot for Smartphone Messaging: http://t.co/0KZhd0C2ph
Generally I try to push my changes to code upstream, but it's not really an option when I'm removing functionality (eg in Hubot scripts).