urwid VS Toga

Pretty cool! I actually wrote something VERY similar a couple of years ago: sless[1]. It's a tool for viewing json-based structured logs. Just like your tool, you can explore into a json object. The difference is, it expects the input to have many json objects, newline separated, and it shows few keys as a preview of the object, to make looking for something in the log easier. It's not quite complete but basic browsing works. It was mainly written to learn more about Urwid[2], a library similar to Curses.

1: https://github.com/dpedu2/sless

2: https://urwid.org/

In addition to the other great libraries already mentioned, since you're in Python you may want to consider urwid, it's really robust and has a lot of built-ins.

To go full in on the latter case, people often use libraries like Cursive (akin to urwid for Python but without the horrendously confusing error messages caused duck typing) or tui.

If you have experience with text user interfaces in the past, you might come across other frameworks such as urwid, curtsies, asciimatics, prompt-toolkit to name a few. Nevertheless, If you have not, you are just fine because you are in the right place to learn about TUIs in general and using Textual specifically. I’ll show you how to develop a wordle clone step by step.

Check also urwid. It's more likely a modern text-based interface library for Python. https://github.com/urwid/urwid

Curses seems difficult to use but you should investigate whether it works with what you want to do. https://urwid.org/ seems fun as an alternative.

You can also take a look at https://urwid.org/

urwid is Python, and looks good.

PS: While I'm at it, I'm wondering if there's a better Python-friendly UI framework than Toga. It seems to be very basic and focused on cross-platform compatibility - which is nice, but if there's something better, that would be nice to know too.