Side by side

QuestDB vs SiriDB

Both stand on time-series databases. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

SiriDB combines an open-source time-series database with pool scaling, online maintenance, and multiple ingestion routes. Its custom query language and lack of SQL support should be evaluated against existing database skills.

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The facts

	QuestDB	SiriDB
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	API, Linux, Mac, Self-hosted, Web, Windows	API, Linux, Mac, Self-hosted
Lowest paid plan	Free or on request	See the plans
Plans published	2	3
Maker	QuestDB	Not published
Website	questdb.com	siridb.com
On time-series databases	#18 of 36	#22 of 36

QuestDB: what it does well

SiriDB: what it does well

Open-source and free
Supports horizontal scaling across pools
Online maintenance and cluster updates
Connectors for several programming languages
Grafana integration and HTTP API

What to know first

SQL is not supported
Uses its own query language
Commercial support plans require 12-month contracts

Alternatives to QuestDB Alternatives to SiriDB The whole list