GiveGab

A "social network for volunteers" that "helps volunteers find volunteer opportunities they’re passionate about in their local community and beyond, log volunteer hours, communicate with friends and create a volunteer resume. Volunteer managers at nonprofits, schools, alumni associations and  businesses can use GiveGab to create and manage events, promote their programs, recruit volunteers, track volunteer hours and report on all the good they’re doing in their communities."  Offer many free resources as well as paid services.