Open Source Databases
Databases that are available as open-source, providing flexibility and community support for users to customize and enhance the use cases at no licensing cost.
Updated June 14, 2026
Products that define this theme
A representative set of Columnar Databases products that exemplify Open Source Databases, curated as a starting point for finding similar software.
Selected from G2's verified user reviews and ratings, then matched to this theme for relevance.
How Did G2 Choose These Open Source Databases Products?
The 6 products shown represent a defining sample for the "Open Source Databases" theme within Columnar Databases on G2 — not an exhaustive list. They are a curated starting point for discovering similar software.
- Sourced from products with verified G2 user reviews and ratings.
- Matched to this theme based on each product's described capabilities and fit, ordered by relevance.
- Rankings and inclusion are unbiased and are not influenced by vendor payment.
Refreshed weekly. Last updated: June 14, 2026.
ClickHouse is the fastest and most resource efficient real-time database and data warehouse. ClickHouse is optimized to serve a wide range of data-intensive workloads, from powering interactive...
An Open-Source Database System
The real-time database for analytics, search, and AI. Store any type of data and combine the simplicity of SQL with the scalability of NoSQL. CrateDB is an open source, multi-model, distributed and...
A scalable, distributed database that supports structured data storage for large tables. Use HBase when you need random, realtime read/write access to Big Data.
Apache Kudu is a free and open source column-oriented data store of the Apache Hadoop ecosystem.
Apache Druid is an open source real-time analytics database. Druid combines ideas from OLAP/analytic databases, timeseries databases, and search systems to create a complete real-time analytics...