(n.) A collaborative Web site comprises the perpetual collective work of many authors. Similar to a blog in structure and logic, a wiki allows anyone to edit, delete or modify content that has been placed on the Web site using a browser interface, including the work of previous authors. In contrast, a blog, typically authored by an individual, does not allow visitors to change the original posted material, only add comments to the original content.
The term wiki refers to either the Web site or the software used to create the site.
Wiki wiki means "quick" in Hawaiian. The first wiki was created by Ward Cunnigham in 1995.