Outline

Outline is a beautiful, open-source knowledge base and wiki designed for teams that need a fast, organized, and searchable repository of company knowledge. The platform provides a clean, distraction-free editor with Markdown support, real-time collaboration, nested document collections, and blazing-fast full-text search that makes finding information instant. Documents support rich formatting, images, embeds, code blocks, tables, and diagrams, with a writing experience that prioritizes readability and simplicity. Outline collections organize documents hierarchically with drag-and-drop reordering, and documents can be starred, shared publicly with read-only links, or restricted to specific groups. The platform integrates with Slack for search and notifications, and supports authentication through Google, Microsoft, OIDC, and SAML for enterprise single sign-on. API access enables building custom integrations and automating documentation workflows. Outline can be self-hosted using Docker for organizations requiring complete data ownership, or used through the managed cloud service. The platform differentiates from Notion and Confluence by doing one thing exceptionally well: providing a fast, beautiful, and organized knowledge base without the complexity of all-in-one workspace tools. For teams that have outgrown Google Docs and shared drives but find Confluence too heavy, Outline provides the perfect middle ground with its focus on speed, search, and clean organization.