Although the source information for you to create your own updates and conversions is in the OP, I plan on updating this post every couple of months, making your job as an UBBT forum admin much easier.
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EDIT: user-agent-string.info no longer provides a list of user agent strings without a subscription. this means that until another resource for this data is found, this list will remain as it currently is.
Last edited by id242; 11/02/2015 10:39 PM.