Federal Register
This site contains annoucement of federal grant opportunities. 

Bureau of Justice Assistance
This site provides grants that support law enforcement, courts, corrections, and other areas in the criminal justice system.

GRANTS.GOV
This is the electronic grant submission portal for over 900 grant programs of federal grant-making agencies.  You can search for grant opportunities here as well as register for notification of grant opportunities.

National Science Foundation
This federal agency to funds grants related to science, mathematics, and
engineering technology.

Advanced Technological Education Program (ATE)
This program has an emphasis on two-year colleges and supports programs that focus on the education of technicians for high-techonlogy fields.

Transforming Undergraduate Education in Science, Technology, Engineering, and Mathematics (TUES)
This program, previously called CCLI, supports efforts to create, adapt, and disseminate new learning materials and teaching strategies to reflect advances both in STEM disciplines and in what is known about teaching and learning.

U.S. Department of Health and Human Services, Health Resources and
Services Administration
This federal office funds grants to improve health and allied health
education programs.

U.S. Department of Education, FIPSE
This link takes you to the Fund for the Improvement of Secondary Education program, the Comprehensive Program.  FIPSE MOBIS provides descriptions of past FIPSE grants.

U.S. Department of Education, Title III Strenthening Institutions Program
This program helps eligible Institutions of Higher Education to become self-sufficient and expand their capacity to serve low-income students by providing funds to improve and strengthen the academic quality, institutional management, and fiscal stability of eligible institutions.

U.S. Department of Education Trio Programs
The link takes you to descriptions of eight programs targeted to serve and assist low-income individuals, first-generation college students, and individuals with disabilities to progress through the academic pipeline from middle school to postbaccalaureate programs.

U.S. Department of Labor, Employment and Training Administration
This federal office funds workforce development grants.