[kmac_]

I can recommend Vertica: SQL, columnar storage, S3 backed, great extensibility, I could keep going. After several years of working with it, I can say it's my favorite OLAP DB that can be as fast as a transactional DB when handled correctly.

[mdaniel]

Confusingly they have a Community License <https://docs.vertica.com/24.4.x/en/getting-started/community...> but their actual things in GH carry an Apache 2 license <https://github.com/vertica/vertica-containers/blob/main/one-...> so I guess you're free to contribute to their getting-started files, but it's a binary license for the product