[ Thanks to Lee Schlesinger for this link. ]
When you want to show people how to accomplish
something on their computers, nothing works better than video. You
can capture all the action on any desktop using any of several open
source alternatives. We picked four applications that cover a range
of users? needs. FFmpeg, recordMyDesktop, VLC, and CamStudio,
between them, offer GUI and command-line usage, run on Linux and
Windows, and provide basic or advanced functionality. The one thing
they have in common is that they?re all free and open source
software.