Plugin: very-simple-password (Used by 5 domains)

Hide your entire wordpress website behind one simple password.

Very lightweight plugin:

• Only 28kb in size.
• No external CSS.
• No external Javascript.

Features:

• Easy. Hide your entire wordpress website behind one simple password.
• Beautiful. You can set your own logo and background.
• Secure. Authentication is done through unique tokens stored in the database and checked against the visitor’s browser.
• Brute force protection.
• Easily translate all front-end strings on Settings.
• Few other options, such as Allow visitor to request password, etc…

Github:

https://github.com/Luc45/Very-Simple-Password-for-Wordpress

This is a FREE plugin with all features included.