The City of Hamilton has recently launched online mapping. It displays everything from development applications, flu shot clinics, zoning & more. Simply click on the information (ie. Development Applications and then zoom in to the area you are interested in by double clicking on the map.
Online tutorials are available by clicking 'Watch a training video' at the bottom of the menu along with frequently asked questions. Check it out at: http://map.hamilton.ca/default.aspx or by clicking on the image above.