It is a commercial product (paid) but offers a limited free demo that shows the password before requiring payment.
The methods explored in this article are primarily aimed at the first and most challenging scenario: recovering a strong "password to open." lostmypass ms excel password recovery
Disclaimer: This article is for educational and lawful purposes only. The author and publisher are not responsible for any misuse of password recovery techniques. Always obtain explicit permission before attempting to recover a password on any file you do not personally own. It is a commercial product (paid) but offers