[hodgesrm]

To that point Altinity has contributed about 900 PRs to ClickHouse, and many more if you include ecosystem projects like the operator, clickhouse-backup (which we maintain), the community grafana plugin (over 11M downloads last I looked), ODBC driver, etc. All of this is open source.

We've also been very active on diagnosing problems, logging issues, and contributing ideas for solutions. Alexey Milovidov has logged the most issues of anyone (2376) but the next two people (1012, 810) are from Altinity. The #6 and #9 contributors of issues are also from Altinity.

[rjzzleep]

I totally forgot about clickhouse-backup. It was frequently referenced in ClickHouse issues, and helped me and probably a lot of others understand how ClickHouse stores and transfers data.