Password Generator Apps and Alternatives

A password is any secret word,

phrase or special string of characters that one uses for proving its identity as an authorized user of a given system.

Depending on its type, password can either be a passcode (when it includes only numbers) or a passphrase (when it is composed of several words).

Users make use of password generators when they want to make sure that passwords protecting various types of data are strong enough.
 
Password generator apps are capable of producing random strings of characters (numbers, uppercase and lowercase letters and/or symbols).

Passwords that are really hard to break contain as much characters as possible and different classes of symbols.