The WordPress platform can have its functionality extended using ‘plugins’ which add new features. In the spirit of open source development, these plugins are stored in the WordPress repository and are available to all users. These are plugins which I have contributed to:
I am the maintainer for OS OpenSpace Maps which allows maps to be inserted into a page or post using the Ordnance Survey OpenSpace platform. This displays the OS maps which give a much greater level of topographical detail than Google or Bing maps, which focus mainly on roads and urban features. The documentation for this plugin is here.