Open Source Alternative to:

TimescaleDB is a PostgreSQL extension that turns Postgres into a purpose-built time-series database. It's designed for teams that want specialized time-series performance without abandoning the SQL ecosystem they already know. Sensor data, on-chain events, application metrics, customer behavior – if it's timestamped and high-volume, this is what it's built for.
The core abstraction is the hypertable: a regular Postgres table that's automatically partitioned by time (or ID) under the hood. Partition skipping at query planning means the database eliminates irrelevant chunks before scanning begins, so queries stay fast even as data grows into billions of rows.
Key capabilities:
Because it's 100% PostgreSQL-compatible, existing Postgres tooling, drivers, ORMs, and extensions all work without modification. That's a meaningful difference from purpose-built alternatives like InfluxDB, QuestDB, or TDengine, which require learning new query languages or migration overhead.
Cloudflare uses it to balance analytical performance with operational simplicity, keeping analytical and configuration data under one roof. The project has 22,000+ GitHub stars and an active Slack community of 12,000+ members.
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Every Sunday we deconstruct one proprietary app and pick the best open source alternatives worth switching to.
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