Multitui creates single-purpose macOS apps for any terminal app, with optional sandbox. It uses the built-in macOS sandbox-exec along with log monitoring to give you an easy UI to manage rules, see what's being blocked, and add rules as you observe files that need to be allowed.
The apps you create are highly customizable and provide many native macOS integrations (document-based app model, Finder integration, global shortcut, etc). It's built with Swift, so it's fast and lightweight.
I also like the idea of TUIs being first-class apps, like what Omarchy did on linux. It helps me context-switch better than cycling through ten similar-looking tabs in Ghostty.
It's free in beta and free for personal use forever.
Does this seem useful? Does it need network sandboxing too?
-David
Before I read your last line, I was about to ask about network sandboxing. I don’t know what the ideal feature set is, but I keep wanting a proxy or network filter that mitigates some of the “dumb” attack vectors for LLMs…