Charity Jobs -- Lists jobs and volunteer opportunities at U.S. based international non-profit organizations, which conduct workplace giving campaigns.

Guide Star
-- Use Guide Star Basic to verify a nonprofit’s legitimacy, learn whether a contribution will be tax deductible, view a nonprofit’s recent Form 990, or find out more about its mission, programs, and finances.

Opportunity Knocks
-- Search U.S. non-profit job listings, post, and manage multiple resumes/cover letters and have the job search agent forward jobs of interest.