[racket] Racket/GUI

Hi, all!
My friend and I are working on an open CRM Systems on the principle of
client-server architecture.
I do rezrabotkoy client project. The client is implemented as a native
application. Initially, the client realized "head" on Tcl / Tk, but later I
decided to rewrite it for racket / gui. I've got two major problems:
1. In the library are very few widgets. Is there more widgets?
2. Perhaps there is Binding on Qt5 or wxWidgets?
3. Where can I find more documentation on programming gui applications in
racket.

Thank you in advance!
Dmitry
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