Wikipedia has become the world’s most famous encyclopedia using as it’s platform the MediaWiki open source software. The software is supported not only by the MediaWiki foundation but by a community of developers who build widgets and add-ons to extend the capabilities. This presentation will review how MediaWiki has been used as a container for a number of resources of value to chemists, specifically SciMobileApps, SciDBs and ScientistsDB holding content regarding mobile scientific apps, scientific databases and scientists. We will also review how chemistry content within Wikipedia has been used to enhance the content underlying the RSC ChemSpider database and how the platform supports an educational environment for chemistry students.