1)   .NET Document 2 Text Converter DLL 1.2
.NET Document 2 Text Converter DLL is a .NET class library that provides you an efficient way of converting your document files from various types to plain text. The supported conversion types are : MS Word (.doc), MS Excel (.xls), HTML and RTF.

 2)   cz-xls2txt com 2.0
CZ-Xls2Txt COM is a COM component/object designed to assist you, the developer, to quickly add an excel document conversion utility to your application. It can be called from VB, VC, DELPHI. It is a batch text converter that convert xls to text