I suggest you the most powerful and effective tool to recover 7z archive password, the tool name is 7z Password Recovery Software is designed by eSoftTools. It has multiple facilities and can recover the password of a 7z file with three techniques like Brute Force Attack, Mask Attack and Dictionary Attack. It offers a 30 day money return guarantee and provides technical support 24×7 with chat and mail option. It presents a free demo version in which users can recover the initial three letters of the 7z file password. 

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