Soundflower is a Mac OS X (10.2 and later) system extension that allows applications to pass audio to other applications. Soundflower is easy to use, it simply presents itself as an audio device, allowing any audio application to send and receive audio with no other support needed. Soundflower is free and open-source.
ScreenToaster is a free online screen recorder which allows you to Make screencasts, tutorials and demos. You can record your screen in one click without any downloads. It is compatible with Windows, Mac OS X, Linux. You can also share videos on the Internet in Flash, embed them on blogs/webpages or send them by email.
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