Yes, both Youzz and buzzbomb.com offer a Free Trial.
Youzz is designed for Medium Business and Small Business.
buzzbomb.com is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Youzz Starts at $169/Month whereas for buzzbomb.com Starts at $49/Month.
Some top alternatives to Youzz includes SocialMailer, Influencity, buzzbomb.com, Hubble, SocialBook, Socialfaim, Influence Hero, Mysocial, Qualified, Workvivo and IFTTT.
Some top alternatives to buzzbomb.com includes Post For Rent, TapInfluence, Upfluence, HYPR, BuzzGuru, Hubble, SocialBook, CreatorDB and Influence Hero.