A single-file implementation of the original Wiki concept created by WardCunningham. With flatfile database and numerous patches to extend feature set.

The Weblog Kitchen explores current research in weblogs, wikis, and other hypertext systems.

A project to create a free, complete, up-to-date and reliable world-wide travel guide in a wiki.

A Wiki Farm where basic Wikis are free. Offers plugins that allow applications and web sites to be built on a Wiki Framework.

Provides wiki and content-managed website hosting.

Heavily featured variant, with revision control, templates, category tables, authorization based on groups, automatic email notification of changes, file attachments.

JSP-based wiki with optional versioning, licensed under GPL.

A wiki farm offering free hosting of Swiki (Squeak Wiki) based wikis.

A network of wiki city guides, with a specialized custom wiki engine available to install to build your own.

A wiki implementation that uses Microsoft`s .NET technology (C# and ASP.NET) and has support for wiki namespaces.

Open source wiki, based on Wakka Wiki, nhanced (XHTML 1.0 and CSS compatibility) and translated into French.

An IIS/ASP implementation with strong XML support.

A professional wiki, written in J2EE, with enterprise features such as PDF export, page refactorings, tight email integration, RSS feeds, a full remote API in addition to all the normal wiki features.

Small, lightweight, handy, expandable, multilingual Wiki-engine based on Wakka Wiki. WYSIWYG editor, easy installer, many localizations, email notification on changes/comments, several cache levels, design themes (skins) support, XHTML compliance, page

A wiki engine designed for modularity and easy installing.

The possibly canonical list of public wikis, on the original wiki.

The Common Lisp wiki, containing links to and resources for the Common Lisp programming language, and written in Lisp itself.

Login-based site with an emphasis on professional cycling and football (soccer).

An experimental microcontent WikiWikiWeb built by Jeremy Ruston. It`s written in HTML and JavaScript to run on any browser without needing any serverside logic. It allows anyone to create self-contained hypertext documents that can be posted to any web

A Wiki implementation that runs on the Zope framework.

Interested in online communities, culture, hypermedia. Topics range from intellectual property to cyberpunk to uniform resource identifiers; and a good reference on wiki technology.