Just found this, thanks for this repo! I see others have offered new projects that could be included in the comparison. Might I suggest Vaex as a future contender?

https://vaex.readthedocs.io/en/latest/

It's lazy, so I'm not sure what magic needs to be done to get actual times for group-by and join. Presumably whatever Spark is doing now that I think about it.

I will now attempt to figure out how to add a tag to this issue.