Best Free Data Warehouses in 2026
15 free and open-source data warehouses ranked by community adoption, search interest, and review quality.
6 open-source · 8 freemium · 1 free · Last verified March 25, 2026
Free Data Warehouses at a Glance
| # | Tool | Score | License | Paid Plans |
|---|---|---|---|---|
| 1 | Apache Pinot Real-time distributed OLAP datastore | 75 | Open Source | Self-host only |
| 2 | Neo4j Connect data as it's stored with Neo4j. Perform powerful, complex queries at scale and speed with our graph data platform. | 70 | Freemium | Free |
| 3 | MotherDuck The modern cloud data warehouse powered by DuckDB. Serverless SQL analytics with no infrastructure to manage—query your data in seconds. Start free. | 47 | Freemium | From $25.00/mo |
| 4 | InfluxDB The InfluxDB is a time series database from InfluxData headquartered in San Francisco. | 46 | Freemium | Free |
| 5 | Elasticsearch Elasticsearch is the leading distributed, RESTful, open source search and analytics engine designed for speed, horizontal scalability, reliability, and easy management. Get started for free.... | 45 | Freemium | Free |
| 6 | MongoDB Get your ideas to market faster with a flexible, AI-ready database. MongoDB makes working with data easy. | 45 | Freemium | Free |
| 7 | MySQL The world's most popular open-source relational database, powering web applications from startups to Fortune 500. | 45 | Open Source | Self-host only |
| 8 | Redis Developers love Redis. Unlock the full potential of the Redis database with Redis Enterprise and start building blazing fast apps. | 45 | Freemium | Free |
| 9 | Starburst Built on Trino, a SQL analytics engine, Starburst is an open data lakehouse with industry-leading price-performance for cloud and on-premises. | 45 | Freemium | Free |
| 10 | Timescale From the creators of TimescaleDB — the PostgreSQL platform trusted by enterprises processing trillions of metrics daily. Start a free trial or get a demo. | 45 | Free | Free |
| 11 | TimescaleDB From the creators of TimescaleDB — the PostgreSQL platform trusted by enterprises processing trillions of metrics daily. Start a free trial or get a demo. | 45 | Freemium | Free |
| 12 | Apache Druid Apache Druid is an open source distributed data store. | 44 | Open Source | Self-host only |
| 13 | ClickHouse ClickHouse is a fast open-source column-oriented database management system that allows generating analytical data reports in real-time using SQL queries | 43 | Open Source | Self-host only |
| 14 | PostgreSQL Advanced open-source relational database with extensibility, JSONB support, and strong SQL compliance. | 43 | Open Source | Self-host only |
| 15 | Trino Trino is a high performance, distributed SQL query engine for big data. | 43 | Open Source | Self-host only |
Free & Open-Source Data Warehouses: What You Need to Know
Several cloud data warehouses offer meaningful free tiers that go beyond trial periods — enough to run analytics workloads for small teams or proof-of-concept projects without spending anything. Open-source alternatives like ClickHouse and DuckDB provide full warehouse capabilities with zero licensing cost, trading managed convenience for infrastructure control. The free tier landscape in data warehousing is particularly competitive, with major cloud providers using generous free offerings to attract teams that will eventually scale into paid plans.
What to Look For in Free Data Warehouses
Free warehouse tiers vary dramatically in what they include. Some limit compute credits (queries stop when credits run out), others limit storage, and some restrict concurrency or features like materialized views. For open-source warehouses, the "free" cost shifts to infrastructure and operations — running a production ClickHouse cluster requires meaningful engineering investment. Evaluate whether the free tier supports your actual query patterns and data volume, not just a demo workload.
All Free Data Warehouses
Connect data as it's stored with Neo4j. Perform powerful, complex queries at scale and speed with our graph data platform.
The modern cloud data warehouse powered by DuckDB. Serverless SQL analytics with no infrastructure to manage—query your data in seconds. Start free.
The InfluxDB is a time series database from InfluxData headquartered in San Francisco.
Elasticsearch is the leading distributed, RESTful, open source search and analytics engine designed for speed, horizontal scalability, reliability, and easy management. Get started for free....
Get your ideas to market faster with a flexible, AI-ready database. MongoDB makes working with data easy.
The world's most popular open-source relational database, powering web applications from startups to Fortune 500.
Developers love Redis. Unlock the full potential of the Redis database with Redis Enterprise and start building blazing fast apps.
Built on Trino, a SQL analytics engine, Starburst is an open data lakehouse with industry-leading price-performance for cloud and on-premises.
From the creators of TimescaleDB — the PostgreSQL platform trusted by enterprises processing trillions of metrics daily. Start a free trial or get a demo.
From the creators of TimescaleDB — the PostgreSQL platform trusted by enterprises processing trillions of metrics daily. Start a free trial or get a demo.
Apache Druid is an open source distributed data store.
ClickHouse is a fast open-source column-oriented database management system that allows generating analytical data reports in real-time using SQL queries
Advanced open-source relational database with extensibility, JSONB support, and strong SQL compliance.
Frequently Asked Questions
What is the best free data warehouses in 2026?
Based on our composite ranking, Apache Pinot ranks #1 among 15 free data warehouses with a score of 75. Neo4j and MotherDuck are also top-ranked free options. Rankings are recalculated regularly.
What is the difference between free and open-source data warehouses?
Open-source tools (Apache Pinot, MySQL, Apache Druid) publish their source code and can be self-hosted with no licensing restrictions. Free/freemium tools offer no-cost tiers but may limit features, usage, or require a paid upgrade for production workloads. Freemium options like Neo4j and MotherDuck provide free tiers with paid upgrades.
How are free data warehouses ranked?
We use the same composite scoring as our main rankings: community interest (30%), search interest (25%), review quality (25%), and pricing accessibility (20%). All tools on this page score the full pricing accessibility bonus since they offer free access. No vendor pays for placement.