Metabase
Self-hostable business intelligence: questions, dashboards, alerts and embeds on the SQL databases you already own.
Business Intelligence
Free self-hostedOpen source · AGPL-3.0
Also offers paid editions — see the detail.
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Self-hosted alternatives to Tableau
Entries in our catalogue that can take over from Tableau. Each one states why, and links the vendor's own source for the claim.
Why it can replace Tableau: Vendor comparison page titled "Why teams switch from Tableau to Metabase". Source