Yes, both Optimum Feedback and ReviewGain offer a Free Trial.
Optimum Feedback is designed for Medium Business and Small Business.
ReviewGain is designed for Large Enterprises, Medium Business and Small Business.
The starting price of ReviewGain begins at $49/Month, while pricing details for Optimum Feedback are unavailable.
Some top alternatives to Optimum Feedback includes Cloud90, ReviewBuzz, Reputation.com, Trustpilot, Critique, Direction Local, Reputation Studio, ReviewRev, ReviewGain and ReputationDefender.
Some top alternatives to ReviewGain includes ReviewBuzz, ReviewInc, Reputation Desk, Reputation.com, Trustpilot, Critique, Guestmeter, Reputation Studio, ReviewRev and Grab Your Reviews.