Google Enterprise Professional
As a first member of the Google Enterprise
Partner
(GEP) program, MC+A works with its clients to leverage Google Enterprise
solutions to find information and collaborate. As a GEP partners, MC+A
develops custom software solutions based on Google products. MC+A resells
Google Search Appliance technology. MC+A also works with the thousands of
Google Enterprise customers to implement Google technology.

In addition to working directly with clients, MC+A has developed several open source projects as a result of this alliance.
The GSALib is a C# API for querying the Google Search Appliance and Google Mini for search results, and it uses the Google Enterprise XML search protocol. This API was developed by MC+A. It is a port of the project gsa-japi developed by Inxight Software.
This project encapsulates the XML api used for querying the Google Search Appliance or Google Mini. A simple demonstration can be seen here Simple Example. Please post to the discussions if you are looking for specific documentation.
The Weather OneBox is a sample OneBox that utilizes the iGoogle weather service as a data source. It is meant to be an example of how to construct an OneBox.