by trigve.hagen on WordPress.org
Custom Responsive Contact, Login & Register Forms with Captcha. Redirection of Register and Login links to a theme based Register page.

This picture is the what the register page looks like in a fresh wordpress install with no other plugins. You can adjust the placement and styling of the header and other elements on the page. Its good to start with this plugin to stop the robots from finding your registration page and filling your database with spam sign ups.
This plugin creates a Responsive Login, Register and Contact us Form with captcha. These forms are Transparent and can be placed via shortcode anywhere on any theme you like. It corrects the Contact Form not sending emails on finicky servers, robot spam sign ups via the registration and contact forms, and redirecting of the Login and Register links to complete a “Normalizing” of the WordPress Installation. To use create a WordPress page with the slug register. Then place these codes where you want the forms. Login = [gwb_login_form] Register = [gwb_register_form] and Contact = [gwb_contact_form]. The plugin defaults to the administrators email but you can fill in the $to_args array with more emails for multiple mail recipients. You can also change the name of the page which at the moment the slug is /register . All options must be hard coded in php.