Uchat is a very powerful ChatBot platform. But don't have a native web widget. So I think that would be an opportunity to integrate with it would have a big market share of their existing customers.
I am not a developer so please check the doc below to see if we have a chance to integrate with it or not.
You can join their community and contact Matthew Miao to talk about the integration.
Their team are very good at cooperation and works super fast.
https://www.facebook.com/groups/uchat.com.au
Thanks!
https://docs.uchat.com.au/