C# .NET text searching API to smartly index & retrieve data from PDF, Microsoft Office Word, Excel, presentations, OneNote, Email, ZIP, EPUB & web files....DOCX, DOCM, DOT, DOTX, DOTM Excel : XLS, XLSX, XLSM, XLT, XLTX...: MPP Diagram : VSD, VSS Microsoft Compiled HTML : CHM OneNote...