ClickHouse

ClickHouse, founded in 2021 and headquartered in Portola Valley, California, has raised a total of $350 million, including a $350 million Series C round in May 2025, reaching a $2 billion valuation. The company develops a high-performance, open-source OLAP database optimized for real-time analytics, serving use cases like business intelligence, observability, and fraud detection. With 51–200 employees, ClickHouse is backed by leading investors such as Thrive Capital, Altimeter Capital, and Benchmark, empowering global enterprises like Sony, Lyft, and GitLab with scalable, lightning-fast data analytics solutions.