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Free Password Strength Meter checks the level of strength of your passwords. It uses information entropy as a measure of strength and reliability. Free Password Strength Meter checks and displays the strength of your passwords, in bits of entropy. It also shows you the level of password strength using a scale of levels: very weak, weak, reasonable, good, strong and very strong password. It is recommended to use only passwords with a strong and a very strong level of strength. Those passwords are unpredictable and complex enough to effectively resist guessing and brute-force attacks. Check your passwords with Free Password Strength Meter and use only strong and secure passwords to protect your privacy. Free Password Strength Meter is a freeware product. It works on Windows 10, Windows 8, Windows 8.1, Windows 7, Windows XP and Windows Vista.