Open source olap projects
Every project in the registry tagged olap, ranked by real GitHub adoption.
DuckDB is an analytical in-process SQL database management system
Apache Doris is a real-time analytics and hybrid search database for AI agents.
Cloud-native data warehouse for lightning-fast analytics
One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.
An easy to use, self-service open BI reporting and BI dashboard platform.
WebAssembly version of DuckDB
Unlock Data's Potential with Open Source Power
Scalable graph analytics database powered by a multithreaded, vectorized temporal engine, written in Rust
Related tags
Frequently asked questions
How many open source olap projects are there?
This registry tracks 8 projects tagged olap, with 85,223 GitHub stars between them. The most-adopted is duckdb at 42,747 stars.
Are these olap projects free to use?
Yes — 8 of the 8 carry an explicit open-source licence across 4 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which olap project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these olap projects still maintained?
8 of the 8 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.