The best alternatives to ZappJS are Autocode, Faux Code Generator, and ImagineAI. If these 3 options don't work for you, we've listed a few more alternatives below.
Autocode is an integrated development environment (IDE) for connecting APIs and creating app-to-app workflows. It provides API autocomplete, code generation, easy multi-app auth, in-browser code execution, dev environments, logging, revision history + more.
Designers and illustrators sometimes create abstracted imitations of code for their technical illustrations and designs. This tool enables easy creation of editable SVGs from real code and syntax highlights. Use a random, or provide your own, Github Gist.
Imagine is a smart code generator for your app’s backend. Add your app settings & data models via a simple UI and instantly generate high-quality Django/Node code (including REST/GraphQL APIs & tests) that you can download & customize. Free & no signup needed.