There could be premade components, but the real thing is to let people write code actually. Non-technical folks may be able to write small pieces of code, I gue

There could be premade components, but the real thing is to let people write code actually. Non-technical folks may be able to write small pieces of code, I guess, even if they're just copying and pasting, then modifying. The code run in each component should be able to talk to a database (locally or over the wire), act on global page parameters or React to form submissions.