Treefrog is coming in Round 7 [1]. (And sorry, we still don't have an ETA for Round 7 but we are hoping for this month.)
[1] https://github.com/TechEmpower/FrameworkBenchmarks/pull/283
[1] https://github.com/TechEmpower/FrameworkBenchmarks/pull/283
onion to be honest looks more like a http server generation framework. similar to what rob fitzpatrick was talking about when he was advocating gos net/http. but then again what do i know i haven't tried any of them.
Personally, even though ruby makes my salary I like C. Always did. Treefrog looks the most like a modern web framework to me. [3]
[1] http://sourceforge.net/projects/cpollcppsp/
[2] http://www.techempower.com/benchmarks/
[3] http://www.treefrogframework.org/documents/tutorial