SearchUnit is a fully featured, asp.net based search engine for websites and web applications. SearchUnit supports a variety of development platforms and frameworks such as MVC, Razor, ASP.NET Web Forms, AJAX, HTML, ASP.
SearchUnit provides the features you'd expect and more. Autocomplete, document preview, AJAX based search results, did-you-mean? suggestions, categorization, filtering, programmatic usage, plugin architecture, search cloud.
Index documents from a variety of sources and in a variety of formats. Whether your documents are web pages (ASPX, HTML, ASP, JSP) MS Office (doc, docx, xls, xlsx, ms), text files, XML, they can all be indexed and searched.