<p>A wiki is a website designed for collaborative editing, letting many people create, update, and organize content directly in a web browser. They emphasize simplicity and openness — pages can be created or modified without special technical skills, and most maintain an edit history so revisions can be reviewed or reverted. Common features - **Collaborative editing:** Several contributors can edit pages, sometimes at the same time. - **Edit history:** Every modification is recorded with a timestamp and the editor’s identity or IP address. - **Interlinking:** It’s easy to create links between pages, forming an interconnected knowledge base. - **Lightweight markup:** Formatting is usually handled by lightweight markup languages (e.g., WikiText or Markdown). - **Permission settings:** Access controls vary — from fully open editing to permissions for certain users or groups. - **Discussion pages:** Dedicated discussion pages enable contributors to coordinate and discuss content. Frequent uses - Community knowledge bases such as Wikipedia - Internal documentation and company knowledge bases - Cooperative writing and shared notes - Educational and classroom projects Benefits - **Fast collaboration:** Many people can collaborate and iterate quickly on content. - **Openness:** Transparency through revision histories and discussions. - **Expandable:** Wikis can grow naturally as contributors add new topics. Limitations - **Vandalism and false information:** Public editing can lead to vandalism or incorrect information. - **Inconsistent quality:** Entries may vary in accuracy, style, and completeness. - **Organizational issues:** Poor coordination or governance can cause content fragmentation and disputes. Illustration - **Wikipedia** — the largest example, maintained by the Wikimedia Foundation and contributed to by volunteers worldwide.</p>