Redash

Redash is an open-source query editor and visualization platform supporting 35+ data sources (SQL, NoSQL, APIs, and more). You write queries, build dashboards, set up scheduled refresh and alerts, and embed them in other applications all from one interface. Founded in 2013, Redash has grown into a solid self-hosted BI alternative that doesn't require a vendor relationship.

It's a solid choice for teams who need a lightweight, self-hosted BI tool without a big vendor footprint. Redash is simpler to deploy and operate than enterprise platforms, though you'll handle more infrastructure and get fewer pre-built connectors or AI features.