The document summarizes the Open Grid Computing Environments (OGCE) software tools for building science gateways. It describes several key components: 1) The OGCE Gadget Container allows building portals out of Google gadgets and supports workflows, registries, and experiments. 2) Tools like XBaya allow composing scientific workflows that can run on resources like the TeraGrid. 3) The software is open source and can be used individually or together to power science gateways and provide interfaces and services to computational resources.