Wink is quite a nice tool - it was the only free one I found that looked good when I was searching. I don't remember which others I found then, but I'm going to check out some of these as well. Thanks for the list.

Thanks so much for this list, and especially for the link to donation coder's roundup.

I was searching for a screencast tool this morning, and then I came across this list in my feed reader. What great timing!

The Geek.

vnc2swf is another free tool that will capture to Flash.

You can also use Windows Media Encoder by itself. It's fairly basic, but works pretty well overall.

Screencasts are great at some things, but poor at others.

- Can't print them (not that printing most how-to guides works nicely either).

- If you can't forward/rewind/pause through them easily and they're doing something complicated then they're pretty dang useless as a walkthrough.

- But what they are absolutely great at is product demos.

Check out this eclipse/glade screencast from Andrew Overholt at Redhat: http://people.redhat.com/overholt/nativeeclipse/index.html
(disclosure: he's an in-law)

That's an awesome demo of how simple something is to do. Could I follow it step-by-step to recreate the example? Not so much.

A few more tools:
- Quarbon Viewlet builder
- the plain old Windows Media Encoder

I personaly have some experience with cam studio recording a intense flash player session at 20 frames per second. The recording was pretty good, however the file was quite big (300MB in 3 minutes) for a 600x400 pixels. I choose about 95 of 100 in quality so there must be some ways to reduce that..

A few more:
http://www.demo-builder.com/
http://www.instant-demo.com/index.htm
http://www.turbodemo.com/eng/index.htm
http://unflash.com/
http://www.macromedia.com/software/captivate/

I think that Wink is the best of the free tools as it approaches even closer to commercial quality.

Finding myself among a lot of cheap tools, or open source it just makes sense to use it. I do find however that capturing quickly and then decimating the framerate is fine, but 100% CPU while capturing the screen with a 3200 amd64.

Wink always looked cool, but I admit it looks a bit scary. Camtasia suits me well, and you might look at using this codec instead of its default: http://www.compression.ru/video/ls-codec/screen_capture_codec_en.html

It's an extremely optimized screen/game codec that compresses more and faster that other lossless codecs I've tested, for its particular applications. It even beats out MSS2, the WMV one. Since it's not exactly well-known, you'd probably have to later convert, but it's the best I know of for capturing.

Camtasia's big downside is the uncompressed audio, I think, if you need that. A codec option would be appreciated.

Windows Media Encoder. Free and easy to use. I use it very often for screencasting, and it includes the codec optimized for GUIs

I'll give another vote for Camtasia. Although its price is a bit steep, it's a well-made application with lots of flexibility.

Regardless of the tool, I strongly encourage screencast authors to include audio in their presentation. Audio will really help carry the message effectively.

I really like Wink. I downloaded it and looked at the samples, made a demo project of my own, and I really liked the way it worked and its simple interface. I will definitely use this to build some tutorials for Mom, who is always asking me how to do stuff on her computer, and prefers to be shown how to do stuff, as she is a very visual learner. Best of all, its FREE!!!

I'd like to add one to the list, particularly since you mention Windows Media 9's screen codec. WME9 is free and does a decent job.

Windows Media Encoder 9 (free)
http://www.microsoft.com/windows/windowsmedia/forpros/encoder/default.mspx

I'm using Flashback Express - got it from a magazine cover. The results looks ok especially as it was free. Now I think about upgrading to the full version. I've got the trial of Flashback and really like it.

New more:

For windows: DemoCreator
<a href="http://www.wondershare.com/e-learning/demo-creator/demo-creator_overview.html">http://www.wondershare.com/e-learning/demo-creator/demo-creator_overview.html</a>;

For windows: DemoBuilder
<a href="http://www.demo-builder.com">http://www.demo-builder.com</a>;

For Mac: Screen Movie Recorder
<a href="http://mac.softpedia.com/get/Utilities/Screen-Movie-Recorder.shtml">http://mac.softpedia.com/get/Utilities/Screen-Movie-Recorder.shtml</a>;