faazshift

Enscrypt replaces wordpress authentication protocols with a mechanism that uses the far more secure scrypt hashing algorithm.
Scrypt is a superior hashing algorithm with configurable CPU and memory parameters. As such, when properly configured, it takes long enough and is secure enough to be highly resistant to brute-force attacks.
Enscrypt can be enabled and disabled at-will without interfering with the built-in WordPress authentication mechanism.

Enscrypt

Enscrypt replaces WordPress authentication protocols with a mechanism that uses the far more secure scrypt hashing algorithm.

BallastSecurity

This plugin seamlessly changes your stored password hash to a far stronger one. The hash that it is changed to is 
generated with a variety of variations on PBKDF2, including my own ARC4PBKDF2 which adds custom ARC4 encryption 
during the hashing processs, then a SHA-1 to meet size constraints. This plugin exponentially increases the strength 
of your stored password.
<h3>Arbitrary section</h3>

Ballast Security Hashing

This plugin drastically increases the security of the hash used to store passwords

Enscrypt vs Ballast Security Hashing