More than 4000 wordpress plugins.

WordPressplugins.org is a free, open-source website creation platform.

WordPressPlugins.org is a content.. management system (CMS) written in PHP that uses a MySQL database. 
In non-geek speak, WordPress is the easiest and most powerful blogging and website builder in existence today.
WordPress is easy for beginners, yet powerful for developers: As discussed earlier, WordPress is a very easy platform to get started with. It’s very easy to set up and run. Most web hosts come with what are called one-click auto-installers.