thanks . this what i did read about passphrase since your previous post
https://blackseedink.com/blogs/news/seed-phrase-and-passphrase-are-not-the-samedo you mean that?
i think Unstoppable wallet is recently developed ? is there secure open source desktop wallet + widely used + highly established . does not require to download entire blockchain and linux compatible ? simple interface and low fees
From reading the article, I got the impression that the author is referring to the password you would add to protect your wallet, rather than "the passphrase" I was referring to which is something else. See this article, it should help you understand things better:
https://bitbox.swiss/blog/optional-passphrases-benefits-and-risks/As for your second question, the Unstoppable wallet is not available for desktops right now. I second the suggestion above for a multicoin open-source wallet, Trezor would be a good choice.