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There was dudle [1] developed and hosted by a German university. Seems unmaintained, but there is an independent project called BitPoll [2].

https://crab.fit/ is an open-source solution. It has a different interface that is much more compact and convenient. I honestly love it.

This has been online for a good number of years. I think Framasoft have their own hosted version.

Well, follow the link and you can see it :)