Tried and proven 
by tens of thousands of users
in nearly every corner of the U.S. Federal Government

Government agencies, departments and offices (partial list)*

Army Corp of Engineers
Army Research Lab
Bureau of Alcohol, Tobacco, Firearms & Explosives
Bureau of Indian Affairs
Bureau of Reclamation
Defense Contract Audit Agency
Defense Information Services Agency (DISA)
Deparment of Agriculture (USDA)
Department of Commerce
Department of Defense (DoD)
Department of Education
Department of Energy
Department of Health and Human Services (HHS)
Department of Homeland Security (DHS)
Department of Interior
Department of Labor (DOL)
Department of State
Department of Treasury
Drug Enforcement Association
Environment Protection Agency (EPA)
Federal Aviation Administration
Federal Bureau of Prisons
Federal Emergency Management Agency (FEMA)
Federal Highway Administration
Federal Railroad Administration
Food and Drug Administration (FDA)
Forest Service
Government Services Administration (GSA)
Internal Revenue Service (IRS)
Metropolitan Washington Airport Authority
NASA
Natinoal Cancer Institute
National Institutes of Health
National Park Service
National Transportation Safety Board
National Weather Service
Naval Post Graduate School
NOAA
Office of Personnel Management (OPM)
Office of Thrift Supervision
Small Business Administration
Smithosonian Institute
Social Security Administration
United States Postal Service (USPS)
US Army
US Bankruptcy Court
US Border Patrol
US Coast Guard
US Courts
US Customs Office
US Department of Veteran Affairs (VA)
US District Courts
US Geological Survey (USGS)
US Immigration and Naturalization Service (INS)
US Marines
US Markshals Service
US Navy
US Pre-Trial Services Office
US Public Health Service
Veterans Administration
Wester Area Power Administration (WAPA)

...and many more

*organizations listed here have not officially endorsed the CSRS and FERS Benefits Calculator and Retirement Planner software program, however users who are working for or are members of each organization have purchased the software.. 

Federal employee unions and assocations
(partial list)*

American Federation of Government Employees (AFGE)
National Air Traffic Controllers Association
National Association of Government Employees
National Treasury Employees Union  (NTEU)
American Postal Workers Union  (APWU)
National Association of Letter Carriers  (NALC)
National Rural Letter Carriers' Association
National Active and Retired Federal Employees Assoc.  (NARFE)

...and others

As the most-trusted, best-selling finanical planning software for U.S. federal and postal employees since 1999, the user base of satisfied customers is growing daily.

Here's just a partial list of the organizations who have employees, managers or members using the software