A wiki is a server-based collaborative tool that allows authorized users to easily create and edit web pages using only a web browser. Wikis see widespread use for collaborating on projects, sharing information within organizations, and creating knowledge bases like Wikipedia. They enable real-time group editing and organization of content without technical skills. However, wikis also face criticisms like issues of reliability, accuracy and uneven quality due to their open nature and reliance on consensus among contributors.

1. Wikis In 30 Minutes or Less

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15. PBWiki