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QuestDB vs TimescaleDB: catalog facts
QuestDB	TimescaleDB
Freemium A free edition or tier is available. Additional features or hosted services require…	Freemium Free, open-source self-hosted extension, with a paid managed cloud service.
Self-hosted	Self-hosted
Supports time-oriented SQL queries Offers an open-source self-hosted edition	Adds time-series scalability to a database teams likely already know: Postgres Stays compatible with the standard PostgreSQL ecosystem and tooling
Managed service and enterprise capabilities have separate terms.	Best performance gains apply specifically to time-series workloads, not general-purpose data Advanced clustering and cloud features sit behind the paid offering
Self-hosted	Self-hosted, Downloadable app
Open source	Open source
License: Apache-2.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.