Just a plug for Civic Commons, a network dedicated to:

“Let’s Save the Public Millions of Dollars

“Government entities at all levels face substantial and similar IT challenges, but today, each must take them on independently. Why can’t they share their technology, eliminating redundancy, fostering innovation, and cutting costs? We think they can. Civic Commons helps government agencies work together. ”

I haven’t used Civic Commons yet, but sharing code, projects, and standards across the government sector is a laudable objective.