If you ever forget password of your 7z file, then you can take the help of eSoftTools 7z Password Recovery Software. Through this software, you can easily open encrypted 7z files. By using its 3 recovery methods you can recover any type of combination password. Mask Attack, Brute Force Attack, and Dictionary Attack are the 3 recovery techniques in this software. It smoothly runs on all editions of window O/S. otherwise, you can try its free demo version that helps to recover the starting 3 characters of the locked 7zip file.