Link Designer - Free Link Designer Plugin for WordPress lets you add beautiful customizable links to your site.

Best WordPress Button Plugin - WP Button Shortcode allows you to easily insert a buttons into your WordPress posts and pages using a simple shortcode.

CSS3 Button Creator/Generator, Create Buttons, Call-To-Action (CTA), Share Buttons & Twin Buttons anywhere in wordpress using button shortcode [wpi_designer_button]

This is a plugin which creates beautiful interactive buttons on a Wordpress post or page.