CamEyes 3.0.1 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app is a product of MiniArtSoft. The program lies within System Tools, more precisely Device Assistants. We recommend checking the downloaded files with any free antivirus.
From the developer:
CamEyes helps you monitor your important places to prevent unauthorized person or object from entering. The application supports multi-camera at the same time. You are able to select one or more sub-zone for each camera. The tool can synchronize images or videos with Dropbox or iCloud for remote monitoring.
You may want to check out more software for Mac, such as par2formac, Missing Sync for Palm Pre or FourEyes3D, which might be similar to CamEyes.