BlueSpice MediaWiki (BlueSpice for short) is a MediaWiki enterprise distribution. It enhances MediaWiki, in particular in the following areas: quality management, process support, administration, editing and security.
The MediaWiki language extension bundle provides an easy way to bring ultimate language support to MediaWiki. The bundle is a collection of a selected few MediaWiki extensions needed by any wiki which desires to be multilingual.
Meza is a MediaWiki administration program which enables the easy install and maintenance of MediaWiki. To make it possible for everyone to have a modern, fully-featured MediaWiki installation. This project aims to make features like VisualEditor, CirrusSearch, etc, easy to install, backup, reconfigure, and maintain in a robust and well-tested way.
Semantic MediaWiki (SMW) is a free, open-source extension to MediaWiki. The Semantic MediaWiki extension allows for managing structured data in your wiki and for querying that data to create dynamic representations: tables, timelines, maps, lists, etc. Semantic MediaWiki is also a full-fledged framework, in conjunction with many spinoff extensions, that can turn a wiki into a powerful and flexible knowledge management system.
Wikibase is the software that enables MediaWiki to store structured data or access data that is stored in a structured data repository. Wikibase basically consists of four MediaWiki extensions. Wikibase Repository and Wikibase Client can be enabled individually or together for a certain MediaWiki installation to turn it into a structured data repository, a client of a structured data repository or both.