Notion

Notion is a connected workspace application that merges notes, documents, wikis, and databases into a single flexible system. Content is built from modular blocks, so a page can hold text, tables, boards, calendars, embedded files, and linked databases side by side. Users assemble their own layouts rather than working within fixed templates, and shared spaces let teams keep knowledge and projects in one place.

The product serves a wide audience, from individuals tracking personal notes to companies running internal wikis and project trackers. Its standout quality is adaptability, since the same building blocks can become a simple to-do list or a structured company handbook.

Founded in 2013 and headquartered in San Francisco, Notion offers a free plan for personal use alongside paid team and enterprise tiers. In recent years it has added AI features for writing, search, and question answering, plus dedicated calendar and email tools.