slickorange

This simple plugin enables you to set up different access codes or passwords that enable users to be added to specific WordPress Roles or Press Permit (http://presspermit.com/) permission groups.
Simply go to Settings -> WP Access Codes to create and manage your codes.
Use the [wp-access-codes] shortcode to display the input field in the frontend.
More features planned! Please make your feature requests in the support area or send a mail to info@slickorange.co.za

WP Access Codes

Assigns a WordPress Role or/and a Press Permit Group to a user based on a predefined access code they enter.

MMDeveloper

A wordpress plugin that allows you to secure your site from changes. You can prevent changes to your wp-admin, wp-content, wp-includes directories. Use this plugin if you got a nasty virus making changes to your site, cos it won’t be able to make changes if the site is non writable. There are some cons though, you won’t be able to upgrade if the site is completely non writable. When you do want to upgrade, make everything writable beforehand.
Built by The Marketing Mix Perth: https://www.marketingmix.com.au

WP Access Codes vs Stop Write