Due to the increase in proposals submitted for the American Recovery and Reinvestment Act of 2009, the Office of Management and Budget (OMB) has authorized steps to alleviate system strain and quickly increase system capacity. As part of this strategy, select programs may choose to use alternate systems to process grant applications during this heightened period of demand.

PIs should be sure to carefully read grant instructions to ensure that proper submission procedures are followed, because there have been temporary alterations to normal protocols for such agencies as the NIH, the Department of Justice and the National Endowment for the Arts. 

It is recommended that PIs track the grants.gov blog the week before submission as the submission portal can change abruptly and with little notice.

The following agencies will be accepting some or all applications outside of Grants.gov,

Corporation for National and Community Service (CNCS)
Department of Defense (DOD)
Department of Education (DOED)
Department of Energy (DOE)
Department of Housing and Urban Development (HUD)
Department of Justice (DOJ)
Department of Treasury, Department of Transportation (DOT)
Environmental Protection Agency (EPA)
National Air and Space Administration (NASA)
Department of Homeland Security (DHS)
National Science Foundation (NSF)

For more information, see: http://www.grants.gov/applicants/bulletin.jsp.