ES.NET 2004 is a full-text indexing crawler and search engine. With ES.NET 2004, documents are crawled and indexed from areas your Intranet, Web Site, or the Web. Only documents matching your specifications are indexed. ES.NET 2004 supports common file types through the use of IFilters, including HTML, XML, Microsoft Word (.DOC), Microsoft Excel (.XLS), Adobe Acrobat (.PDF), MP3 ID3v1 & ID3v2 (.MP3), and Rich Text Format (.RTF). Microsoft SQL Server 2000 required.