The C2 Wiki, also known as the Portland Pattern Repository Wiki, is one of the earliest Wikis on the web. It can be found at

History and leadership Edit

The wiki was founded in 2000(?) by Ward Cunningham, a software development author and consultant who specialises in wikis, software patterns, and agile methodologies.

Membership Edit

Registration is open to anyone via free website signup. No Registration confirmation is required.

Culture and Community Norms Edit

As a Technical community the culture and community norms in many ways reflect those found in other such groups.

The community likes:

The community dislikes:

Patterns Edit

The wiki is itself a repository of patterns, many for software development, but some specific to the wiki itself.

Their list of software patterns can be found at (the web patterns are particularly of interest) and their social norms are documented at

See also Edit

Community content is available under CC-BY-SA unless otherwise noted.