Notion

Notion is a workspace app that combines notes, documents, databases, project management, and wikis into one tool. You write in it, build spreadsheets in it, manage tasks in it, and organize your team's knowledge in it — all in the same interface. The core concept is blocks. Everything in Notion is a block — a paragraph, a heading, an image, a to-do item, a database, an embedded file. You drag blocks to rearrange content, nest blocks inside each other, and convert between block types (turn a bullet list into a toggle, a toggle into a callout). This sounds simple, but the flexibility it creates is what makes Notion different from tools that do one thing well. Google Docs is a better document editor. Jira is a better issue tracker. Notion is worse at each individual thing but better at having everything in one place. Databases are Notion's most powerful feature. A database is a collection of pages with properties (columns). You can view the same database as a table, a kanban board, a calendar, a gallery, a timeline, or a list — switch views without changing the underlying data. Formulas compute values from properties. Relations link databases together (connect a Tasks database to a Projects database). Rollups aggregate data across relations. If you've ever built something complex in Airtable, you can build it in Notion too, with the advantage that each database row is also a full page you can write in. Notion AI is an optional add-on ($10/member/month) that adds writing assistance, summarization, Q&A over your workspace, and AI-powered autofill for database properties. The AI can answer questions about content spread across your workspace — 'What decisions did we make in last month's planning meetings?' — which is useful for teams with large knowledge bases. The pricing: Free for personal use with some limits (5MB file uploads, 7-day version history). Plus ($12/user/month, $120/year) removes limits. Business ($24/user/month, $240/year) adds SAML SSO and 90-day version history. Enterprise ($32/user/month, $312/year) adds SCIM, audit logs, and advanced security. Notion AI is an additional $10/member/month ($96/year) on top of any paid plan. The honest assessment: Notion is the best 'second brain' tool for people who want everything in one place. It replaces 3-5 separate tools, which reduces context switching but increases the learning curve. The flexibility is both its strength (you can build almost anything) and its weakness (you have to build almost everything from scratch, and it's easy to over-engineer your setup). If you spend more time organizing your Notion workspace than actually doing work, you're using it wrong.