Create Topic functionality for RT

Perhaps this is an obvious question but I really like the functionality that is used in this forum.
Is there a way to have RT tickets and articles searched with keywords as we type like this functionality that I am using with the create new topic?
When I type a word on the right I see Your Topic is similar to…


How about this extension?

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I’ll install it and see how it works - is there a demo or video anywhere?
Does it work on Ticket Creation?