There is a comparison of some products preceded by introductory videos

Camtasia


Captivate


Adobe Presenter



Criteria
Camtasia
Captivate
Presenter




Purpose
Used to record any action on the screen. File sizes can get large.
Used to record software demos
Records mouse clicks and allows editing
Used to record narrated Powerpoints and post as .swfs
Price
Academic Download (bundled with Snagit) $175
Adobe CLP web download $75
Three licenses to each school board as part of ministry license for Adobe Connect. Additional licenses in the $300 range.
Plugins/Features
Has a Powerpoint plugin

Plugin to add video at http://Train.RefinedData.com/RefinedVideo

Editing Suite accompanies it
Creates bubbles with mouse clicks etc, which can be edited.
Nice demo by Marilyn Legault at http://breeze.hwdsb.on.ca/usingpresenter


Can force user interactivity.
Edit waveform view of sound. Insert and Edit Video and audio.

Output to .mov, .wmv,.flv,.swf, .avi
Can create closed captioning
Can determine the amount of control that a user can have - eg. next page, previous page


Can create a complex flow of "slides".
Built-in Quiz manager. Can change the slides used based on the results. Information can be interfaced with LMS's.
Summary
Best suited to produce short 1-3 minute videos. Easy to learn to do simple things.
Creates tutorial style videos, that may or may not include narration. More full-featured. Using those features requires a steeper learning curve.
A plug-in for Powerpoint, that allows you to narrate it and publish as a .swf. Works well with Adobe Connect and as standalone web site.

Free Options

Criteria
Wink
CamStudio
Jing

http://www.debugmode.com/wink/
http://camstudio.org/
http://www.jingproject.com/
Purpose
Used to record any action on the screen. File sizes can get large.

Screen recording software similar to Camtasia - may stop being free
Price
Free
Free
Free
Plugins/Features

OpenSource






Output to .mov, .wmv,.flv,.swf, .avi



List of Free and Simple Tools to Create Video Tutorials for Teachers including Webinaria.


http://freescreencast.com/ ,

Another free tool, that doesn't even need a software install (plus it has a great name!) http://www.screencast-o-matic.com/ as well as http://screencastle.com/

Another option worth exploring for creating a tutorial in as a document: http://screensteps.com/

Slides + Podcast = Slidecast using Slideshare - a tutorial is here.