ElasticCo made Elasticsearch an #opencore product w/ basic security features in a proprietary plugin.
Search Guard made basic ES security features an open core product w/ enterprise auth as a proprietary plugin.
ElasticCo freed code for security plugin recently and now accuses Search Guard of copying both proprietary and #FOSS code. #fossdrama
https://www.elastic.co/blog/dear-search-guard-users
@kyle and Amazon forked safe guard's code...