Mac users interested in Un-scan-it 5.0 generally download:
The UN-SCAN-IT gel - Gel Analysis Software turns your scanner into a gel densitometer and allows you to automatically analyze gel electrophoresis images. UN‑SCAN‑IT gel software works with most image formats (TIFF, JPG, BMP, GIF, etc.) from any scanner, digital camera, or other image source to digitize and analyze electrophoresis gels.
Additional suggestions for Un-scan-it 5.0 by our robot: