Downloading isightcapture 1.1 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Design & Photo Tools, more precisely Screen Capture.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of this free Mac application is Randy McMillan.
From the developer:
isightcapture - capture image from quicktime video device. This small CLI tool will be useful for grabbing images to implement simple webcams etc. It will work without being logged and without a GUI window, unlike many other applications. It only has been tested with MacOS X Tiger and iSight, but might well work with other setups.
You may want to check out more software for Mac, such as RecordPro, ViewletBuilder6 Enterprise or 4Media DVD Frame Capture, which might be similar to isightcapture.