WikiApiary is a wiki that tracks the performance and activity on hundreds of other MediaWiki websites. WikiApiary is largely powered by MediaWiki itself along with Semantic MediaWiki and dozens of related extensions. Additionally, there are bots that work in conjunction with the wiki to provide all of the additional services.
Most of the interesting parts of WikiApiary are on the wiki itself. If you are interested in extending WikiApiary data collection to new data sets or modifying how WikiApiary bots work please read the build information.