A map of city center -- click to zoom. Note that this map is the best there is, and it only shows about 60% of the roads and addresses. The mapping infrastructure here is a mess -- the whole society relies on landmarks and locals who you can ask for directions at every turn. For example, here's an acutal address:

The Doddabudhi Family
Near Mahajana College
Jayalaxmipuram, Mysore

No numbers, no road name -- just the name of a nearby well-known building. When giving directions to rick drivers, delivery boys, etc, you also just name things nearby and keep your fingers crossed. There's certainly no such thing as an online map (not counting static .jpg's)