Notion

Notion is an all-in-one workspace that combines notes, documents, databases, kanban boards, calendars, and wikis into a single, customizable interface. It enables individuals and teams to capture knowledge, plan projects, and collaborate in real time using templates, flexible blocks, and linked databases.
Available on web, desktop, and mobile, Notion supports integrations, sharing and permission controls, and rich content embedding, making it suitable for personal productivity, team collaboratio...