MediaWiki is a free and open-source software designed to run on server farms and suited to power collaborative websites. It is capable of handling daily traffic in millions. MediaWiki is a sort of a CMS minus defined content ownership. It has a minimum pre-defined structure so it allows the structure of develop according to the needs of the collaborators and users. MediaWiki is written in PHP, which is uses to process and display and data stored in a database. It supports various SQL database systems like MySQL, PostgreSQL, MariaDB, and SQLite, which are required at the time of installation besides PHP version 5.5.9 or later. MediaWiki is a robust, feature-rich, immensely scalable, and secure software capable of managing large-scale collaboratively-edited projects. Features Edit with ease Edit a section without loading the whole article, know the recent changes made to an article, use double-click to edit feature, preview the article after editing, and hide minor changes from the editing summary. Syntax and Structuring Options Mix Wiki-syntax and HTML, or enable full use of HTML. Separate content with namespaces, save time with word-extension linking, and disambiguate for variety of meaning with parenthetical hiding. Link to specific sections and enable or disable subpages. Assign multiple categories to each page, and use special keywords for enabling the dynamic data insertion. Presentation Use skins to present websites in different ways and customize CSS to tune the look and feel further. Generate table of headings, intra-page anchors, and printable versions of articles. Number headings. Covert ISBN numbers to links automatically. Rights based Permissions MediaWiki allows multiple rights based permissions. Users, administrators, developers and bureaucrats have different sets of permissions that can be enabled or disabled. Permissions schemes can also be configured to match requirements. Prevent Spamming and Vandalism MediaWiki offers various tools to prevent link spamming and abusive editing that include blacklists, and anti-spam, anti-vandalism extensions. Excellent Multimedia Support Image resizing is automatic in MediaWiki. Upload audio files and graphics with ease and use Special Upload to preview multimedia. Add mathematical formulae and graphs with extensions.