Design Science MathType? is a powerful interactive tool that will revolutionize the way you create print and web-based documents that contain math. MathType works with any word processor, presentation program, page layout program, HTML-authoring tool and other types of software, to create equations for research papers, class materials, web pages, slide presentations, journal articles and books.
MathType is the Professional Version of Equation Editor

If you are familiar with our Equation Editor included in Microsoft Office and other products, then you will really appreciate MathType's extra features. It will let you create a wider range of equations for a wider range of documents, and help you work much more efficiently. We've added an enormous amount of functionality that effectively transforms Microsoft Word into a state-of-the-art math word processor and web page editor.
MathPage: Revolutionary New Technology for Publishing Math on the Web

Home Page: http://www.mathtype.com

Download: http://www.mathtype.com/dl/mtw52.exe