It seems that the OMB has a Budget Formulation wiki. You have to be a civil servant or one of their contractors to participate, but the rest of us can follow up with what is happening. The wiki and content management system was architected by Netspective.
"Shahid’s combination of technical leadership, ability to understand the business need and provide solutions with low marginal costs is incredible — a rare find," said Sandi McCabe, director of the Program Management Office for the Line of Business, which is based in the Education Department.
Agencies save with OMB’s online tool