TimescaleDB — #3 Alternative to Snowflake / BigQuery
Open-source time-series and analytical hypertables built directly as a PostgreSQL extension
Adds automatic time-partitioning, 95% columnar compression, and incremental continuous aggregates right inside standard PostgreSQL without maintaining a second OLAP cluster.
License: Apache-2.0 / Timescale License · Pricing: Open Core · Compare all Snowflake / BigQuery alternatives · Official Website