Download of IriunWebcam 2.8.8 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The software is included in System Tools. The actual developer of this free Mac application is Iriun.
From the developer:
Iriun Webcam is an application designed to help you use your phone's camera as a wireless webcam for your Mac. First you need to install Webcam for Mac, download Iriun Webcam app to your mobile phone and start using the phone with your favorite video applications.
You may want to check out more Mac applications, such as TouchCopy, i-Installer or TunesArt, which might be similar to IriunWebcam.