Notify, or optionally block, site visitors that they are using an outdated web browser, so you can use html5, css3, etc. freely.
Browser Blocker allows you to pick and choose which browsers(versions) can access your web page and which ones are given a blocked splash screen.
The bookmark to login nobody but you. Simple and secure.
Show beautiful notice to users using old browsers
VSF Simple Block plugin. Acts as a sort of software firewall.
As nice scroll is a jquery plugin for WordPress site. This plugin will create a nice scrollbar for your site.
AS login you can fully customize wordpress login page.
Find out which customers has bought your "X" product.