A wiki is a website designed for collaborative editing, letting many people create, update, and organize content directly in a web browser. Simplicity and openness are central to wikis: anyone can often add or change pages without technical knowledge, and edits are usually logged for review or rollback. Common features - **Collaborative editing:** Multiple people can edit the same pages, occasionally concurrently. - **Edit history:** Each change is logged with a time and the editor’s name or IP. - **Interlinking:** Links between pages are simple to create, helping build connected content. - **Lightweight markup:** Pages are typically formatted with lightweight markup like WikiText or Markdown. - **Permission settings:** Wikis may allow public editing or restrict changes to registered or authorized users. - **Discussion pages:** Talk or discussion pages let contributors debate edits and organization. Frequent uses - Community-driven knowledge bases (for example, Wikipedia) - Internal documentation and company knowledge bases - Cooperative writing and shared notes - Educational and classroom projects Benefits - **Fast collaboration:** Multiple people can add and refine content quickly. - **Openness:** Visibility into edits and discussions shows how decisions were reached. - **Expandable:** Wikis can grow naturally as contributors add new topics. Limitations - **Vandalism and false information:** Open editing may allow intentional or accidental inaccuracies. - **Inconsistent quality:** Entries may vary in accuracy, style, and completeness. - **Organizational issues:** Without clear governance, content may become fragmented or disputed. Example - **Wikipedia** — the best-known wiki, run by the Wikimedia Foundation and built by volunteer contributors worldwide.