First, remember that, since Hack is backwards-compatible with PHP, any PHP framework can be used in Hack. You won't get the benefits of typing code interacting with that framework of course, but the type system was carefully designed to deal with missing type information ("gradual typing"). So if you want to use Laravel, Symfony, etc, you can do so perfectly fine while still writing the code using them in Hack.
As for pure Hack frameworks, you can look at the Hack language section of the HHVM blog which contains a few "community roundups". One of the most active today is probably Titon, though I've not used it myself and so can't say how complete or ready to use it is.