Checkmyreference.com
Offers three levels of service depending upon the amount of information being researched.
Employment Reference Check Associates
Providing job seekers with a confidential, professional employment reference checking service to confirm the accuracy of job references being given by former employers.
Interfolio
For applications that require more than just a resume, create an online portfolio of your best work.
Just Checking
Performance reference check service for positions with annual earnings greater than $50,000.
References-etc
Offers employment and rental reference checking services for job hunters who suspect a bad reference. Offers credit reports and driving records.