Please provide a link to a Delphi like tool for the Web, including components for backend comunication.

Allow me to present: https://anvil.works/

Visual interface editor? Check.

Component-based UI model? Check. (It's all in Python, everything is an object, very Delphi-ish.)

Back-end communication? Check. (One-line RPC to call functions on the server.)

Database integration? Check.

(The built-in datastore runs on Postgres, and lets you do things like delegate views on a table directly to the client. Mix this with data bindings, and you can create CRUD apps with tiny amounts of code. Or you can start importing the appropriate Python libraries and go to town with your favourite DB.)

Thanks for proving me wrong, Anvil actually does look quite good.