What are the best open source alternatives to ClickHouse?

The top open source alternatives to ClickHouse include Databend and Apache Cloudberry. These tools offer similar functionality while being free and open source.

Why choose an open source alternative to ClickHouse?

Open source alternatives provide transparency, community support, no vendor lock-in, and often cost savings. You can customize the software to your needs and have full control over your data.

Are these ClickHouse alternatives really free?

Yes, all listed alternatives are open source and free to use. You may need to pay for hosting if you self-host, but the software itself is free.

InfluxDB – The purpose-built time series platform for high-velocity ingestion and real-time queries at scale.

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Open Source ClickHouse Alternatives

A curated collection of the 2 best open source alternatives to ClickHouse.

The best open source alternative to ClickHouse is Databend. If that doesn't suit you, we've compiled a ranked list of other open source ClickHouse alternatives to help you find a suitable replacement. Other interesting open source alternative to ClickHouse is Apache Cloudberry.

ClickHouse alternatives are mainly Relational Databases (SQL) but may also be Cloud Data Warehouses. Browse these if you want a narrower list of alternatives or looking for a specific functionality of ClickHouse.

Written by Piotr Kulpinski

Last updated: September 9, 2026

ClickHouse

High-performance columnar OLAP database system for real-time analytics on big data, with SQL support and linear scalability.

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Databend

Databend is an open-source, elastic cloud data warehouse built for high-performance analytics and seamless integration with popular data tools.

Databend is an open-source cloud data warehouse designed for high-performance analytics at scale. Some key features and benefits include:

Cloud-native architecture optimized for object storage platforms
SQL:2011 compliant with support for complex queries and time travel
Seamless integration with popular BI, ETL, and data science tools
Native AI capabilities to enhance analytics workflows
Robust security with role-based and data-based access controls
Sub-second analytics for real-time insights
Efficient compression and storage for logs and event data
Data archiving capabilities for long-term retention
Massively parallel processing for large-scale offline computing

Databend offers fully-managed cloud, self-hosted enterprise, and free community editions to suit different needs. The cloud version provides a pay-as-you-go model with multi-region availability on AWS.

Benchmarks show Databend Cloud outperforming Snowflake by 10-36% on TPC-H queries while costing significantly less. The platform integrates easily with popular data systems and tools to enable end-to-end analytics workflows.

With its combination of performance, flexibility and cost-efficiency, Databend aims to be an economical alternative to established cloud data warehouses for organizations looking to unlock insights from their data at scale.

InfluxDB

The purpose-built time series platform for high-velocity ingestion and real-time queries at scale, without sacrificing performance or cost. Download InfluxDB for free.

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Apache Cloudberry

Leverage advanced analytics with a modern PostgreSQL kernel. 100% open source for robust data solutions.

Apache Cloudberry is a cutting-edge open-source Massively Parallel Processing (MPP) database, designed for large-scale analytics and AI/ML workloads. Built on a modern PostgreSQL 14.4 kernel, it offers enhanced enterprise capabilities while maintaining compatibility with Greenplum Database. Fully open source, it allows you to maximize your data's value with robust features.

Key Benefits:

Advanced Analytics: Ideal for data warehousing and complex analytics.
Enterprise-Ready: Modern kernel with enhanced capabilities.
Community Driven: Contribute and collaborate with a vibrant community.

Apache Cloudberry is currently incubating at The Apache Software Foundation, ensuring a stable and community-driven development process. Whether you're migrating from Greenplum or starting fresh, Cloudberry offers a seamless transition with tools like gpbackup. Join the community to contribute and explore the potential of your data.