[Beaver117]

Elasticsearch

[pas]

https://github.com/elastic/elasticsearch is Apache2, and free as in beer, no?

[kapilvt]

not quite that repo is a mix of https://github.com/elastic/elasticsearch/blob/master/license... and apache 2.0 .. the elastic license stuff is in a particular sub directory, but there's so many intermingled commits, a contributor can't look at git history without becoming tainted. Which then leads to elastic suing folks building on their opensource.. https://www.elastic.co/blog/dear-search-guard-users

https://www.elastic.co/blog/dear-search-guard-users-includin...