Overview

MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia. It is now used by several other projects of the non-profit Wikimedia Foundation and by many other wikis, including this website, the home of MediaWiki.
MediaWiki is an open source project released under the GNU/GPL 2 terms.
Features
- Links with shortcuts
- Skins
- User styles
- "Stub" threshold
- Printable versions
- Auto-number headings
- Intra-page Anchors
- Generate a table of contents
- Automatically turn ISBN numbers into links
- XHTML-compatible
- File upload featurs
- Mathematical formulas
- Automatic resizing of images
- WikiHiero
- EasyTimeline for time charts
- Every page has a link "Watch this article for me"
- User contributions
- Extended recent changes
- Related changes
- Side-by-side diffs
- Users can (optionally) specify a "real name"
- On-page credits
- Database-driven (MySQL and PostgreSQL are both supported)
- Parser caching
- Output caching
- Cookie-based account and login system, but anonymous users can also edit pages
- All revisions of an article are stored (optionally compressed)
- RSS syndication available for many special pages
- RDF metadata