I have released a plugin that shows current user-defined shell variables in Zsh using full-screen textual UI.

When coding a script, testing something in shell, etc. one often does repetitive echo $var to see result of a loop, a function, etc. Now just pressing Ctrl-B suffices, a ZUI application will start – the zbrowse, and nicely list all user-defined (not from e.g. zshrc) parameters (i.e. variables). One can also show all shell parameters and search them incrementally.

The project is located at Github