Hi Denise,
Doing a google search brings you a lot of responses. But the
reality is that the two tools are a bit different. Camtasia is not
a slide based authoring tool and is more a screen capture/recording
tool. You can do quite a few things with Camtasia maybe a bit more
smoothly than you can with Captivate in the screen recording arena.
However, Captivate is more of a soup to nuts tool. You can start
start out blank screen (not available in Camtasia), or you can
import PowerPOint slides (Camtasia offers PowerPoint recording) and
Captivate offers animation options not available in Camtasia.
Captivate DOES have a screen recording option, however, it still
renders them in a more broken up format. This is cool for editing
but also limits the smoothness of the video framing.
A suggested option is to use them together. Each of the
softwares have their strengths and the great thing is that they
publish to swf format so you can pull your edited file into the
other software for further use. So, if you are just looking to do
software tutorials, then I might suggest Camtasia. However, if you
are looking to do course building, assessments and evaluations, and
things of that nature, then Captivate is your tool. You can do a
lot of things combining Powerpoint and Camtasia. But why would you
want to for simple things if you can do it with one tool. That
said, I like intermingling the tools personally.