All 161 Dependencies
Every package ClickHouse depends on, ranked by repo health score.
ClickHouse is an open-source, column-oriented database management system purpose-built for real-time online analytical processing (OLAP). It stores data by columns rather than rows, enabling extreme compression ratios and the ability to scan only the columns needed for each query — a fundamental design decision that allows it to execute complex aggregations over billions of rows in milliseconds rather than minutes.
The system is deployed by engineering teams at companies including Tesla, Lyft, Cloudflare, and Anthropic who need analytical query performance that traditional data warehouses cannot match. ClickHouse runs on a single laptop via a standalone binary or scales horizontally to petabyte-scale distributed clusters, making it equally useful for local file analysis and production observability pipelines handling millions of events per second.
ClickHouse ships with a rich ecosystem of built-in storage engines (MergeTree, ReplicatedMergeTree, AggregatingMergeTree, SummingMergeTree), a vectorized query execution pipeline built in C++, native connectors for Kafka, S3, HDFS, PostgreSQL, MySQL, and object storage data lakes including Iceberg, Delta Lake, and Hudi. A managed cloud offering on AWS, GCP, and Azure handles infrastructure concerns for teams that want the performance without the operational overhead.
The project has been actively developed since 2016, has over 48,000 GitHub stars, releases monthly stable versions with a concurrent LTS track, and maintains a global community across 100+ countries with regular in-person meetups and an active Slack.
