Cutelyst is a web framework built atop Qt5 and follows the design approach of Perl's Catalyst Framework. Cutelyst is principally written by Daniel Nicoletti.
The Cutelyst 0.2 release that happened today is more real-world-ready. This release features framework documentation at Cutelyst.org, a WordPress-like blog has been written using Cutelyst as an example app, API updates, and a variety of other changes.
Those wishing to learn more about the Cutelyst Qt5 web framework can read more on Daniel Nicoletti's blog and find the code via Gitorious.