I wonder what would be hard about FatFree? To me it does not get much simpler than that. And it has a router, templating engine, auto loader (even with name space support, if you wish) and several other plugins.

It helps when you need it and lets you do things your way at the same time.

The only caveat is there's basically only one guy developing it.

Ham looks good. However, Fatfree has lot more than Ham - templating, framework variables.

It will be exciting to see how Ham comes up. Will try to use it in some hobby project.