QuestDB — #5 Alternative to Snowflake / BigQuery
High-throughput Apache-2.0 time-series SQL engine ingesting millions of financial & IoT rows/sec
Zero-GC Java/Rust/C++ engine featuring `ASOF JOIN` time-series SQL extensions, InfluxDB line protocol ingestion, and PostgreSQL wire compatibility.
License: Apache-2.0 · Pricing: Open Core · Compare all Snowflake / BigQuery alternatives · Official Website