C:
Center for Theoretical and Computational Materials Science - Materials measurement and data delivery [U.S. Department of Commerce (DOC), National Institutes of Standards and Technology (NIST)]

D:
Data and Analysis Center for Software (DACS) - The Data and Analysis Center for Software (DACS) is the DoD Center of Excellence responsible for acquiring, archiving, analyzing, synthesizing, and disseminating scientific and technical information related to Software Technology and Software Engineering. [U.S. Department of Defense (DOD), Defense Technical Information Center (DTIC)]

E:
Engineering Statistics Handbook - An online tool to help scientists and engineers incorporate statistical methods in their work [U.S. Department of Commerce (DOC), National Institutes of Standards and Technology (NIST)]

F:
Federal Resources for Educational Excellence - Mathematics - Identifies effective curriculum resources, create high-quality professional development materials, and disseminate useful information and products to improve K-12 mathematics teaching and learning [U.S. Department of Education (ED)]

Fundamental and Computational Sciences Directorate - Research covers fundamental discoveries in biology, chemical and materials sciences, molecular science, atmospheric sciences, and computational sciences and mathematics. [U.S. Department of Energy (DOE), Pacific Northwest National Laboratory (PNNL)]

G:
Guide to Available Mathematical Software - A cross-index and virtual repository of mathematical and statistical software components of use in computational science and engineering [U.S. Department of Commerce (DOC), National Institutes of Standards and Technology (NIST), Information Technology Laboratory (ITL)]

M:
Math, Statistics, and Computational Science - The site provides a variety of resources [U.S. Department of Commerce (DOC), National Institutes of Standards and Technology (NIST), Information Technology Laboratory (ITL)]

Math: What’s the Problem? - International assessments show U.S. math students outperformed by those in many other countries. Research supported by NSF illuminates the role of teaching, curriculum and technology in math education, and demonstrates the importance of math education to all citizens. [U.S. National Science Foundation (NSF)]

Matrix Market - A visual repository of test data for use in comparative studies of algorithms for numerical linear algebra [U.S. Department of Commerce (DOC), National Institutes of Standards and Technology (NIST), Information Technology Laboratory (ITL)]

Military and Government Acronyms - Specialized government and military-related acronym and abbreviation resources to identify terms, clarify jargon and otherwise become familiar with the language of science and technology. [U.S. Department of Defense (DOD), Defense Technical Information Center]

T:
Template Numerical Toolkit - A numeric library for scientific computing in C++ [U.S. Department of Commerce (DOC), National Institutes of Standards and Technology (NIST), Information Technology Laboratory (ITL)]

The Space Place - Games, animations, projects, and fun facts about Earth, space and technology [National Aeronautics and Space Administration (NASA)]