National Center for Alternative Certification: search for programs that provide alternative routes for becoming a teacher
School Spring: job search site for new and experienced teachers
Carney Sandoe and Associates: recruitment, search and strategic consulting services for independent service worldwide; specializing in recruiting teachers and administrators.
Teachers-Teachers.com education recruitment
The National Minority Network: a national recruitment firm that helps minority students and professionals looking for jobs in education.
National Association of Independent Schools job listings