Howard G. Cunningham (born May 26, 1949) is an American computer programmer who developed the first wiki and was a co-author of the Manifesto for Agile Software Development. A pioneer in both design patterns and extreme programming, he started coding the WikiWikiWeb in 1994, and installed it on c2.com (the website of his software consultancy) on March 25, 1995, as an add-on to the Portland Pattern