apache-druid
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Rill Data
Rill Data builds the fastest business intelligence tool for humans and AI agents. Founded in 2020 by Metamarkets veteran Michael Driscoll, Rill takes a BI-as-code approach: dashboards, metrics, and business logic are defined in SQL and YAML, versioned in Git, and powered by embedded OLAP engines (DuckDB in Rill Developer, ClickHouse and Apache Druid in Rill Cloud). The result is sub-second, operational dashboards that teams actually use - processing more than 100 billion daily events for customers in programmatic advertising, media, and fintech.
Imply
Imply is a San Francisco-based data analytics company that built its platform on Apache Druid - the open-source real-time analytics database that its co-founders helped create. The company offers Imply Polaris, a fully managed cloud database-as-a-service for real-time analytics, and Imply Lumi, billed as the industry's first Observability Warehouse. With $215M in total funding and unicorn status at a $1.1B valuation, Imply serves 100+ enterprise customers including Atlassian, Reddit, and Cisco ThousandEyes, enabling sub-second query performance across terabytes to petabytes of streaming and historical data.