Recently I founded SysInspire 7z Password Recovery software with the best review, many users say its help to recover the 7z password on a mouse click without tempering data of the file. This software has various algorithms to recover lost 7z password. It does not have any limitation for the type of characters involved in the password and size or length of the password. Even it works fine with each variant of Windows OS. A free demo version is also available for trial which can display the first 3 characters of the password.