TUAW Faceoff: Screencasting
http://www.tuaw.com/2008/05/14/tuaw-faceoff-screencasting/

TUAW
2008

Abstract:

Screencasting -- the not-so-ancient art of recording the computer screen for the entertainment and enrichment of others -- has evolved into quite a Hydra of options. How do the myriad gladiators in this arena stack up? I've tried everything I could find that could record a little movement on the screen, and selected 8 contenders for the matchup.