Freeware tool to crack excel password [duplicate]

Here are two places you can try to get the Macros to crack protected Excel workbooks:

How to remove, crack, or break a forgotten Excel xls password

AllInternalPasswords

I've had successes and failures with both. It's mostly just trial and error at this point.

OpenOffice. It works for write-protection, at least (I last tried with version 2.4, and it may be a bug). Just turn off write protection, and it won't ask for a password.

If you want to crack read protection, then I don't know if it works. And if you want to read protect your documents, encrypt it instead of simply password protecting it with MS Office.