[matt42]

Wt is more focused on providing Qt-like widget of building interfaces server side. Silicon does have any tool to build html pages. It lets the client do the rendering.

Crow is a more similar to silicon. But silicon has several advantages:

   - several backend (microhttpd, websockets)
   - sql middlewares and orm for sqlite and mysql
   - dependency injection

(ps: I have no experience with crow)