All in One SEO Pack Pro is the original WordPress SEO plugin, developed since 2007 by Michael Torbert and the team at Semper Plugins, which is based right here in Raleigh North Carolina, for managing the Search Engine Optimization of your website or blog. All in One SEO Pack is one of the most downloaded plugin for WordPress with over 45 million downloads. Recommended by SEO experts for both pros and novices, chances are you’ve searched Google and found a website that’s running this powerful WordPress plugin.