We develop plugins to extend the functionality of Craft CMS, and to tie into third-party APIs. We often make these plugins public and freely available. You can find our plugins on our GitHub account or through the Plugin Store.
X-Clacks-Overhead is a non-standardised HTTP header based upon the fictional work of the late, great, Sir Terry Pratchett. This plugin enables you to add the pre-requisite 'GNU Terry Pratchett' as well as other custom X-Clacks-Overhead headers to Craft.