Upd: Mathtype 6.9b
MathType 6.9b is an interactive formula editor for Windows and Macintosh. It allows users to build mathematical notation using a point-and-click interface or by typing LaTeX code. The software outputs equations as high-resolution graphic objects (like WMF, EPS, or GIF) or embeds them directly into word processors via Object Linking and Embedding (OLE).
For the uninitiated, MathType is a interactive equation editor developed by Design Science (now owned by Wiris). It allows you to create mathematical notation for word processing, presentations, desktop publishing, and web pages. Unlike the basic equation tools found in Microsoft Word, MathType offers a vast library of symbols, robust LaTeX support, and precise formatting control. mathtype 6.9b