MathType works with Visio, allowing you to create equations to annotate or label your flowcharts and diagrams.
Visio is a diagramming application that allows you to produce many types of flowcharts and other business diagrams and drawings.
$97 ($57 academic)Upgrade $49 ($37 academic) 




MathType is a powerful interactive equation
editor for Windows and Macintosh that lets you create mathematical notation
for word processing, web pages, desktop publishing, presentations,
elearning, and for TeX, LaTeX, and MathML documents. 