Notion

Notion is a collaborative platform that seamlessly integrates notes, knowledge bases, and task management. It offers infinite hierarchy and interlinked organizational flexibility, giving notes enough freedom in how they relate to one another. Its layout is highly flexible, allowing content to be organized and dragged as individual blocks, and even enabling Trello-style kanban boards for project management. Its rich content types support embedding images, web pages, documents, and even videos — making it virtually limitless.