For Mac Minis and MacPros which don’t have a built in camera, you can add a USB webcam. However, webcams require drivers to operate, and most of those come from the factory with only Windows drivers.
Some cameras are supported by the UVC (USB Video Class) built into OSX since 10.4.3 (list in the UVC table below, from the maccam web site)
Other cameras are supported by the open source maccam software (list of 403 supported models)
Some cameras that use the Sonix chipset are supported by drivers downloadable from Sonix Keep in mind that new versions of OS X can disable drivers. Discussion and instructions at Insanely Mac
Support for different applications will vary. iChat is notoriously finicky on camera support.
UVC Compliant web cams
| Microsoft | LifeCam NX-6000 | depends (UVC) | |
| Logitech | QuickCam Pro 5000 (new – 2006) | depends (UVC) | |
| Logitech | QuickCam Fusion (new – 2006) | depends (UVC) | |
| Logitech | QuickCam for Notebooks Pro (new – 2006) | depends (UVC) | |
| Logitech | QuickCam Orbit/Sphere MP (new – 2006) | depends (UVC) | |
| Logitech | QuickCam Ultra Vision | depends (UVC) | |
| Creative Labs | Live! Cam Optia (VF0270) | depends (UVC) | |
| Fujifilm | FinePix E550 | depends (UVC) | |
| Bodelin | ProScope HR | depends (UVC) | |
| Microsoft | Xbox Live Vision (Xbox 360) | depends (UVC) | |
| Logitech | QuickCam Communicate STX | depends (UVC) | |
| Logitech | QuickCam Pro 9000 [QCAM-200S] | depends (UVC) | |
| Logitech | QuickCam Pro for Notebooks [QCAM-200V] (2007) | depends (UVC) | |
| Logitech | QuickCam Deluxe for Notebooks | depends (UVC) | |
| Creative Labs | Live! Cam Optia AF (VF0280) | depends (UVC) | |
| Creative Labs | Live! Cam Optia Pro (VF0380) | depends (UVC) | |
| Creative Labs | Live! Cam Video IM Pro (VF0410) | depends (UVC) | |
| Microsoft | LifeCam VX-7000 | depends (UVC) | |
| Microsoft | LifeCam NX-3000 | depends (UVC) | |
| Logitech | QuickCam Fusion Ultra | depends (UVC) | |
| Cisco | Vt Camera II | depends (UVC) | |
| Logitech | QuickCam Communicate Deluxe | depends (UVC) | |
| Logitech | QuickCam Orbit/Sphere AF | depends (UVC) | |
| Hercules | Dualpix Exchange | depends (UVC) | |
| Targus | USB 2.0 Micro Webcam (AVC05EU) | depends (UVC) | |
| TerraTec | TerraCam X2 | depends (UVC) | |
| Creative Labs | Live! Cam Chat IM (VF0530) | depends (UVC) | |
| Philips | SPC 1300NC | depends (UVC) | |
| Philips | SPC 1000NC | depends (UVC) | |
| Philips | SPC 620NC | depends (UVC) | |
| Philips | SPC 520NC | depends (UVC) | |
| Philips | SPC 525NC | depends (UVC) | |
| Philips | SPC 530NC | depends (UVC) | |
| Creative Labs | Live! Cam Video IM Pro (VF0260L4) | depends (UVC) | |
| Creative Labs | Live! Cam Optia AF (VF0560) | depends (UVC) | |
| Microsoft | LifeCam VX-5000 | depends (UVC) | |
| Pico Instruments | iMage [PIKCU03W] | Camera | works (UVC) |