#24 in DatabasesUpdated 2026-08

QuestDB

by QuestDB · Open-source time-series database with SQL over hot and Parquet storage

50.8 — BenchRank score out of 100

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Overview

QuestDB is an open-source time-series database queried with SQL, including time-series extensions such as SAMPLE BY, ASOF JOIN, HORIZON JOIN and materialised views. Writes land in a write-ahead log for durability, then in a time-partitioned columnar format. Enterprise adds automatic tiering of older data to Parquet on S3, Azure Blob or GCS, queried through the same SQL engine.

Best for: Engineering teams ingesting high-rate trading, sensor or telemetry data and querying it in SQL
Pricing: No prices are shown: the open-source edition is a free Apache 2.0 download, and QuestDB Enterprise is only offered through a trial or a sales contact.
Runs on: macOSSelf-hostedCLI

Strengths and trade-offs

Strengths

Apache 2.0 core; data kept in open Parquet and Iceberg formats
Time-series SQL: SAMPLE BY, ASOF JOIN, materialised views
One SQL query spans hot local storage and cold object storage
Runs on Docker, Kubernetes, AWS, Azure, GCP, Linux, macOS, Windows

Trade-offs

Open source edition is single-instance: no replication or failover
OSS auth is basic over unencrypted transport; TLS, RBAC and SSO are Enterprise
Automatic tiering to Parquet object storage is Enterprise-only
No Enterprise prices published; you must contact sales for a quote

Pricing

Published plans from QuestDB’s own pricing page, in USD. Usage charges and add-ons may apply on top.

QuestDB pricing tiers, monthly rates in USD
Plan	Monthly	Includes
QuestDB Open Source	—	Apache 2.0, self-managed binaries, containers or source Single instance; no replication, failover or tiering Basic auth only, over unencrypted transmission Community support via forum, Slack and GitHub
QuestDB Enterprise	Contact sales	Replication, automatic failover and multi-AZ read replicas TLS, RBAC including column level, SSO via OAuth 2.0/OIDC, audit logs Auto-tiering to Parquet and Iceberg on S3, Azure Blob or GCS 24/7 support with a 99.9% uptime SLA; self-managed, on-prem or BYOC

How this score is made up

Each dimension is scored out of 100 and combined into the headline score using fixed weights.

MCP support: 0 out of 100
API quality: 10 out of 100
Documentation: 90 out of 100
Agent friendliness: 93 out of 100
Pricing transparency: 65 out of 100
Changelog: 80 out of 100
Marketing site structure: 85 out of 100
Operational trust: 20 out of 100

Measured, but not part of the score

Useful to know, but not a mark for or against the product — so these do not affect the ranking.

Openness: 85 out of 100
Maintenance: 100 out of 100

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