ES.NET 2004 is a highly scalable, full-text indexing Web crawler and search engine. With ES.NET, documents are crawled and indexed from your Intranet, Web Site, or the Web. Crawling and updating can be automated using the built-in scheduler. ES.NET 2004 consists of a Windows Service (actual spider), a Web Application (interface to the service), and a Search Application (for integration into your existing Web site). 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).