TinyTake - Best Free Windows Screen Capture Software
DuckLink Software
Pure Mac: Screen Capture - Software for Macintosh
ShinyWhiteBox.com
Ambrosia Software, Inc. -- utilities/WireTap Pro
Ambrosia Software, Inc. -- utilities/WireTap Pro
Sound recording tools: Total Recorder - captures any audio from the Internet, records audio from CD, microphone, line-in, converts any sound formats to WAVE and MP3