I'm surprised that Pyramid is absent from this benchmark. Is it that unpopular? I would have thought it's more widely used than Bottle, for instance.

There is an issue open for this, but it hasn't received much attention:

https://github.com/TechEmpower/FrameworkBenchmarks/issues/18...

That or no Pyramid developer has wanted to put time into submitting a pull request. You should go for it!