Notion

All-in-one workspace combining notes, tasks, wikis, and databases in a block-based editor. Teams and individuals use it as a unified hub for documentation, project tracking, and knowledge management, with real-time collaboration and flexible page nesting.

Notion is used by teams at Figma, OpenAI, Ramp, Cursor, and Vercel, and adopted by a majority of Fortune 100 companies and over half of YC startups. It differentiates from tools like Confluence or Coda by blending documents, databases, and projects in one block-based surface with a public API for integrations.

Main capabilities:

• Block-based pages supporting text, databases, embeds, and 50+ content types
• Native databases with views: tables, boards, calendars, galleries, timelines
• REST API for reading and writing pages, databases, blocks, and users
• MCP server for connecting workspaces to AI tools like Claude and Cursor
• Real-time collaboration, granular permissions, and workspace templates

Common setups: team wikis and runbooks, product roadmaps and sprint tracking, documentation sites, personal knowledge bases. Developers integrate via the official JavaScript SDK and API to sync project data, build internal tools, or feed Notion into automations.