Use this tag if you're looking for a wiki implementation/engine, converters between different wiki syntaxes, wiki plugins, or similar wiki-related software.
A wiki is a type of content-management system designed to let users build content rapidly, typically with thorough cross-referencing. Editing is facilitated by text markup and template-based paging. Wikis are usually intended for collaborative editing, so many applications offer tools such as revision control to enable curation. Most depend on a browser for user interface.
More details on the term "Wiki" can be found in the Wikipedia Wiki article – in a double sense, as Wikipedia probably is the best known example for a Wiki itself.