You cannot be serious?! Are you trolling?
First of all, something not being free (as in gratis) does not mean it is proprietary per se.
Second of all, your reading comprehension failed you again:
However, if you cannot, or do not want to pay, you can click the button at the bottom to use DeArrow for free. No worries if you can’t or don’t want to pay :)
https://github.com/ajayyy/DeArrow
https://sponsor.ajay.app/database
This (again) is from the link in the comment you replied to…
Your attitude really doesn’t work well with your lack of reading comprehension.
The link is in the comment you replied to.
How exactly were you not able to see that?
The link is right there, you could’ve just clicked it instead of taking the time to write this question?!
I really like Wormhole for this exact purpose.