Limbo - “Dark, disturbing, yet eerily beautiful, Limbo is a world that deserves to be explored.” Joystiq. “Limbo is as close to perfect at what it does as a game can get.” Destructoid. Buy LIMBO: Special Edition.
PloyRef - Automated employee reference checking
Findem - Findem’s Impossible Search lets you find candidates who have the EXACT attributes you’re looking for in a new hire.
Tomigo - Tomigo is a social recruiting platform that leverages your company's social connections to hire top talent.
Higherme - Platform for hiring hourly employees (YC W15)
WorkGrades - WorkGrades is the best software for gathering and managing your work references.