ClickHouse

What it does

ClickHouse is an open-source columnar database management system for online analytical processing (OLAP), capable of building reports in real-time with SQL queries.

ClickHouse is a fast open-source column-oriented database management system that allows generating analytical data reports in real-time using SQL queries

Powering agentic systems with millisecond queries at petabyte scale. Langfuse is now part of ClickHouse. Discover the leading open-source platform for LLM observability, evaluations, and prompt management. Ideal for building, monitoring, and optimizing AI applications at scale. Now in Public Beta: ClickHouse Managed Postgres. Run Postgres up to 10X faster, with real-time analytics built-in. Deliver instant insights and dashboards at scale. Analyze billions of rows in real time with millisecond results. Store and query logs, metrics and traces at scale using ClickStack, the open source observability stack powered by ClickHouse. Analyze and explore data instantly for insights and apps. Scale…from clickhouse.com

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  ClickHouse2016 · clickhouse.com · ▲12

  ClickHouse is a free analytic DBMS for big data.

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  ClickHouse-local – a small tool for serverless data analytics2023 · clickhouse.com · ▲289

  Me with my friend Vitaly Ludvichenko made an experiment to combine ClickHouse server and client to make a self-contained program running a database engine and processing data without a server: https://github.com/ClickHouse/ClickHouse/pull/150 Development continued in the past 6 years, and now clickhouse-local becomes a swiss-army knife for data processing. Say "ffmpeg" for datasets and more. It can resemble textql, octosql, dsq, duckdb, trdsql, q, datafusion-cli, spyql, but has better capabilities and performance. Here is a tutorial:…

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  ScratchDB – Open-Source Snowflake on ClickHouse2023 · github.com · ▲261

  Hello! For the past year I’ve been working on a fully-managed data warehouse built on Clickhouse. I built this because I was frustrated with how much work was required to run an OLAP database in prod: re-writing my app to do batch inserts, managing clusters and needing to look up special CREATE TABLE syntax every time I made a change. I found pricing for other warehouses confusing (what is a “credit” exactly?) and worried about getting capacity-planning wrong. I was previously building accounting software for firms with millions of transactions. I desperately needed to move from Postgres to…

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  Distributed Tracing Using OpenTelemetry and ClickHouse2021 · github.com · ▲105

  Open source APM: OpenTelemetry traces, metrics, and logs - uptrace/uptrace

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  chdb2023 · clickhouse.com · ▲88

  Embedded SQL OLAP engine powered by ClickHouse

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  AGX – Open-Source Data Exploration for ClickHouse (The New Standard?)2025 · github.com · ▲48

  Hey HN, We are excited to announce that we’ve open-sourced AGX, a fast and lightweight data explorer for ClickHouse. It is designed for developers and analysts who want to leverage SQL-native querying in an IDE-like environment. Here’s what makes AGX stand out: - Built on ClickHouse (accessible via embedded chdb or remote instance). - IDE-like user interface: features tabs, a Monaco editor, and a fast keyboard workflow. - Zero setup required: no infrastructure or complex dashboards to manage. - Ideal for exploring live blockchain data, while also flexible enough for general ClickHouse usage…

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