WetFeet.com
Their recruitment branding products—including Company Q&A interviews and online videos—provide you with an opportunity to differentiate yourself and reach the kind of people you want to hire, clearly establishing your company as an employer of choice.

Wonderlic
Has provided pre-employment testing since 1937. They’ve got individual tests to full-scale human resource consulting services.

WorldatWork (formerly American Compensation Association)
The professional association for compensation, benefits and total rewards.