Comment by eatonphil

I was surprised to see that ClickHouse and ElasticSearch have the same number of contributors. That's pretty astounding given how much older and more prominent ElasticSearch has been.

https://github.com/ClickHouse/ClickHouse/graphs/contributors

https://github.com/elastic/elasticsearch/graphs/contributors

Edit: I was very off. The Github contributor graph does not show all actual contributors. ElasticSearch has somewhere around 2-3 times as many contributors as ClickHouse.