Notion

Notion's pitch is one app that replaces ten: notes, docs, databases, and project boards, all linked and searchable. That flexibility is the whole appeal, and it holds up right until a database crosses roughly 5,000 records, at which point pages start taking three to five seconds just to load. Small, technically comfortable teams who like building their own systems get the most from it; if you just want a task list that works on day one, look elsewhere on this page.