Written with B4X using ElasticSearch and Tika. Free but not open source. ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
More info and download here: https://www.nmcollector.net/post/desktop-search-application-now-available
More info and download here: https://www.nmcollector.net/post/desktop-search-application-now-available