Amundsen

Amundsen is worth adding because it remains one of the defining open-source names in data discovery. Its strength is not that it tries to be every metadata platform at once. It matters because it focuses on the practical problem many data teams actually feel first: making datasets easier to find, evaluate, and use with enough surrounding metadata to create trust.

Its pricing story is simple and refreshingly honest. Amundsen is an Apache 2.0 licensed open-source project, and the official site does not present a first-party commercial pricing page. That means the real cost question is whether the team self-hosts and operates it internally or pairs it with consulting, support, or additional tooling outside the official project surface.