Yes. questdb is free and open-source software, distributed under the Apache-2.0 license.

Which platforms does questdb support?

questdb provides downloads for Windows, Linux.

What is the latest version of questdb?

The latest version is 9.4.3, released on Jun 15, 2026.

QuestDB is an open-source time-series database optimized for high-speed data ingestion and low-latency SQL queries.

How can I install QuestDB?

QuestDB can be installed using Docker or Homebrew. Docker commands are provided for quick setup, and macOS users can use Homebrew to install and start QuestDB.

What platforms does QuestDB support?

QuestDB can be deployed on various platforms, including AWS, Google Cloud Platform, Docker, and DigitalOcean.

What license does QuestDB use?

QuestDB is released under the Apache 2.0 open-source license.

questdb

by questdb 17.2k stars Apache-2.0Data & Database

Download

About questdb

QuestDB is an open-source time-series database designed for high-speed data ingestion and low-latency SQL queries. It is optimized for handling time-series data, making it suitable for applications like financial market data, sensor telemetry, and real-time monitoring. The database uses a column-oriented storage model and leverages SIMD instructions and parallelized vector execution for performance.

QuestDB supports multi-tier storage, including WAL, native columnar, and Parquet formats. It offers interfaces such as Postgres protocol (PGwire) and REST API, along with a web console for data management. The database is hardware-efficient and designed for quick setup and operational ease.

QuestDB is particularly effective for scenarios involving high data cardinality, volatile data, and continuous streaming ingest. It also supports AI coding agents for automated data pipelines and analytics.

Key features

Low-latency, high-throughput ingestion
Low-latency SQL with time-series extensions
SIMD-accelerated, parallel execution
Multi-tier storage: WAL → native columnar → Parquet
Postgres protocol (PGwire) and REST API
Web console for queries and data management
Apache 2.0 open source and open formats
Finance functions and orderbook analytics

Download 9.4.3

Jun 15, 2026

Windows
Windows

x64 · questdb-9.4.3-rt-windows-x86-64.tar.gz80.9 MB

Linux
Linux

x64 · questdb-9.4.3-rt-linux-x86-64.tar.gz89.3 MB

View all 10 versions

Frequently asked questions

Is questdb free?: Yes. questdb is free and open-source software, distributed under the Apache-2.0 license.
Which platforms does questdb support?: questdb provides downloads for Windows, Linux.
What is the latest version of questdb?: The latest version is 9.4.3, released on Jun 15, 2026.
What is QuestDB?: QuestDB is an open-source time-series database optimized for high-speed data ingestion and low-latency SQL queries.
How can I install QuestDB?: QuestDB can be installed using Docker or Homebrew. Docker commands are provided for quick setup, and macOS users can use Homebrew to install and start QuestDB.
What platforms does QuestDB support?: QuestDB can be deployed on various platforms, including AWS, Google Cloud Platform, Docker, and DigitalOcean.
What license does QuestDB use?: QuestDB is released under the Apache 2.0 open-source license.

More Data & Database

netdata

79.7k

Netdata provides full stack observability with AI-powered insights, designed to be efficient and accessible for small teams. It focuses on delivering fast and comprehensive monitoring capabilities.

Data & Databasev2.10.3

meilisearch

58.6k

Meilisearch is a fast search engine API designed to integrate AI-powered hybrid search functionality into websites and applications. It focuses on delivering efficient and accurate search results for enhanced user experiences.

Data & Databasev1.49.0

etcd

etcd-io

52.0k

etcd is a distributed key-value store designed for reliably storing critical data in distributed systems. It provides consistent and highly available storage for configuration data, service discovery, and coordination.

Data & Databasev3.7.0