I think the “simple, modular, and extensible” makes this interesting. And for those, it being written in Python are relevant.
32 karma · joined May 8, 2014
On the JavaScript side you can use whatever you like: plain JavaScript, react, vue, svelte, … whatever you’re familiar with.
And it can cross compile to Windows, Mac and Linux, so all major platforms covered.
The rules are more complex than can be answered based on a simple citizenship+destination question.
I wouldn't trust a website with such low quality text and information, especially not for advice on legal/travel documents.