The IGS (Integrated Gadget System) is the backend administration system for CityRoom Gadgets built for and hosted on the iGoogle platform.

The IGS comprises a Gadget duplicator (the Homepage Gadgetry), igGadgets (a directory of Gadgets created through the Homepage Gadgetry, a User Admin (admin for third parties to manage Gadgets leased through the Homepage Gadgetry), a Super Admin (administration for the management of CityRoom Gadgets), an accounting system, and a Master Admin (administration system for managing the entire IGS).