Glean

Glean is a search and AI assistant for companies. It connects to the tools a team already uses, such as document storage, chat, email, ticketing and wikis, builds an index of that content and lets employees search all of it from one box or ask questions in plain language.

Its answers link back to the documents they came from, and it is built to respect the permissions of the source apps, so people should only see results they could already open. That point is the one to test during a trial: check a few restricted folders and private channels before rolling it out widely.

It is aimed at mid-sized and large organizations and sold through sales conversations rather than self-serve plans. Before buying, ask which connectors you need, how often content is re-indexed, where data is stored and how the AI models are hosted.