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Numerous backend engineers at [Metamarkets](http://www.metamarkets.com) and other companies work on Druid full-time. If you any questions about usage or code, feel free to contact any of us.
Google Groups Mailing List
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The best place for questions is through our mailing list:
[druid-development@googlegroups.com](mailto:druid-development@googlegroups.com)
[https://groups.google.com/d/forum/druid-development](https://groups.google.com/d/forum/druid-development)
IRC
Several of us also hang out in the channel \#druid-dev on irc.freenode.net.
