Matt Mullenweg, the director of the WordPress Foundation, has been directly involved in the creation of, or coordination of volunteers around, a number of WordPress projects that espouse the core philosophy:

• WordPress, freely available GPL blogging software with about 346,509 lines of code representing about 91 person-years of development.
• WordPress is available in over 200 languages and the latest version has been downloaded over 77 million times.
• WordPress Plugins, a repository of over 54,000 freely available plugins representing about as many volunteers. These plugins have received over 859 million downloads that we know about.
• WordPress Themes, over 3,048 free GPL-licensed design and themes for WordPress that have received over 128 million downloads.
• Currently there are over 700 WordPress meetup groups and in 2018 over 140 WordCamps were held in countries all over the world.
• bbPress, open source forum software that works right inside WordPress.
• BuddyPress, a project that allows anyone to create a social network on purely Free Software.

The source code for all of the above is freely available for any use to anyone in the world via the links above.