An open source wiki system based on tdbengine. It is small, easy to set up and administrate and stores all data in a local, indexed database. It can optionally hold all content as static html pages, too.

A simple, elegant wiki engine implemented in Lua. Site contains documentation for the engine.

A (now defunct) content management tool with an intuitive markup language, unixlike access management, a directory structure and seamless page renaming.

A basic wiki-engine in Ruby with three-step installation. Contains a userguide, links to an IRC channel, and a mailing list.

A Japanese WikiClone built using dRuby, ERb, RDtool, MutexM; inspired by Tiki.

An extensible wiki written in Lua. It can also be used as a framework for building wiki-like applications. Contains documentation, forums, and a section for hosting user modifications.

An extensible wiki engine written in REBOL, with weblog features and a streamlined interface.

An IIS/ASP implementation with strong XML support.

Open Source wiki engine, written in C#/XSLT, that supports WYSIWYG editing, file attachments, searching across pages and attachments (including MS Office documents) and a flexible security model.

A Semantic WikiWikiWeb that uses RDF to manage metadata and ontologies.