Links to other science search engines

Other Sites Containing Scientific Research Funding Opportunities

Grants Net (Sponsored by the US Department of Health and Human Services; searches all HHS Grants programs including NIH, and has links to other agencies)
Social and Natural Sciences funding information by Aris (subscription required)
Community of Science (Monitors research and funding opportunities for the scientific R&D community; membership required for full access to database)
Find-it (links for grant seekers to foundations online and other resources)
Foundation Center (database of 10,000 foundations; monthly subscription fee required)
National Science Foundation Online Documents (search the "Online Document System" for current funding opportunities)
Science Wise (Search grant and contract opportunities from U.S. federal agencies, corporations, foundations, and the European Union)