CLiki is a "free collaborative hypertext (Web) authoring program", a Wiki written in Common Lisp. It is also a website using the software and dedicated to the subject of Common Lisp. Cliki was the first wiki variant to introduce so called "free links", using this _(free link format) as an alternative to the much-criticized CamelCase. The CLiki program is free software licensed under the MIT license. It runs under SBCL and uses the Araneida Common Lisp web server.