dotLucene/Lucene.Net is the .NET implementation of the Lucene full-text search engine library. Lucene.Net is now under ASF. It's new home is located here: http://incubator.apache.org/projects/lucene.net.html.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.