Software which can effectively retrieve forgotten 7z file password without damage file information quickly named as eSoftTools 7z password recovery software. This tool can recover all types of password by the use of mask attack, brute force attack and dictionary attack. This tool has some unique features like- preview option and copy to clipboard option. A free demo version is also provided on official website of eSoftTools. This gives first three letter of password recovery.
More info:- https://www.esofttools.com/7z-password-recovery.html