Yes, both Sprout Social and ReviewBuzz offer a Free Trial.
Sprout Social is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
ReviewBuzz is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Sprout Social Starts at $89/User/Month when Billed Yearly whereas for ReviewBuzz Starts at $199/Month.
Some top alternatives to Sprout Social includes Zoho Social, Crowdfire, SocialBee, Buffer, Sprinklr, Hootsuite, Planable, SocialMgr, Later, SocialBu, Ultimate SMM, Social Mako, CloudSocial, SocialHub and Lately.
Some top alternatives to ReviewBuzz includes Cloud90, Reputation Desk, Reputation.com, Trustpilot, Guestmeter, Reptrics, Reputation Studio, ReviewRev, ReviewGain and ReputationDefender.