Yes, both Fomo and TrustActivity offer a Free Trial.
Fomo is designed for Large Enterprises, Medium Business and Small Business.
TrustActivity is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Fomo Starts at $19/Month whereas for TrustActivity Starts at $9.99/Month.
Some top alternatives to Fomo includes Proof, RocketProof, Fizfy, JustProof, Social Oracle, Super Social Proof, Sooproof, Social Proofy, Proofly and SocialProofed.
Some top alternatives to TrustActivity includes Fomo, Proof, Convertproof, Super Social Proof, Sooproof, Social Proofy, Proofly, SocialProof, Prooven.io and Prooflander.