QuestDB

QuestDB is the highest-performance open-source time series database, designed for financial data, IoT, and observability workloads. It queries billions of rows per second using a columnar storage model and SQL with time extensions. Used by Airbus, Aquis Exchange, and Fortune 500 companies for real-time analytics.

Founded: 2014
Category: Dev Tools
Funding: VC-backed

Every fact above is shown only where it could be checked against a source: funding against a primary source, backers against the investor’s own directory, and a location only where the company names that city on its own site. A row that is absent is one we could not source, not a zero. The summary is a written description of the company. Category is our own classification. Spotted something wrong? Tell us.