MathType 5 for Windows

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.

Features
# Easy-To-Use Graphical Interface
# Automatic Formatting
# Comprehensive Collection Of Math Symbols
# easily converts Microsoft Word documents to web pages
# Microsoft Word/Office Support
# creates smooth-looking GIF equations
# Customizable keyboard shortcuts
# Insert chapter, section and equation
# Built-in Translators for TeX and LaTeX
# Save Equations as GIF images, EPS and WMF (windows metafile)
# can be used with any presentation software to create slides for use in presentations