Suil is a library for loading and wrapping LV2 plugin UIs. For more information, see http://drobilla.net/software/suil.
With Suil, a host written in one supported toolkit can embed a plugin UI written in a different supported toolkit. Suil insulates hosts from toolkit libraries used by plugin UIs. For example, a Gtk host can embed a Qt UI without linking against Qt at compile time.
-- David Robillard d@drobilla.net