Essential DocIO is a 100% native .NET library that generates fully functional Microsoft Word documents in native Word format. Essential DocIO library can be used in any .NET environment including C#, VB.NET and managed C++. Essential DocIO is a Non-UI component that is used on Windows Forms, WPF and Web applications. Essential XlsIO can create and preserve documents. It has unique features like Find and Replace, Mail Merge and Conversions.