from the blog:
overheard recently in #moose
LaTeXiT
Version: 1.15.0 ||
Release Date: 2008-04-15 ||
License: Freeware
LaTeXiT is a small utility that allows you to quickly typeset LaTeX equation, without bothering with file creation, preambles, and so on. The PDF image obtained can then be exported by drag'n drop to any application supporting it.
LaTeXiT also features an application service to be used through other applications.
Tags: scientific , latex , math , publishing


Opinions:
A lifesaver.
What a GREAT application! I LOVE the Linkback support.
LaTeXit + VoodooPad = teh best!!!
I'd much rather use Grapher which comes with OS X. You can copy paste equations from Grapher in Pages/Word.
For those situations where you need it, this little app is irreplaceable.
Excellent tool. If only Keynote supported inline replacement like Pages. The author is also very receptive to comments and suggestions. I asked him to include an option to change the service shortcut and he did it by the next release. Awesome!