ClickHouse — #1 Alternative to Snowflake / BigQuery
Blazingly fast Apache-2.0 columnar OLAP database scanning billions of rows per second
Powers real-time analytics at Cloudflare, Uber, PostHog, and Langfuse—combining vectorized SIMD execution, 10–40x compression, S3 tiered storage, and PostgreSQL/MySQL replication.
License: Apache-2.0 · Pricing: Open Core · Compare all Snowflake / BigQuery alternatives · Official Website