Yes, both 15Five and Mirro offer a Free Trial.
15Five is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Mirro is designed for Medium Business and Small Business.
The starting price of 15Five begins at $7/User/Month, while pricing details for Mirro are unavailable.
Some top alternatives to 15Five includes Lattice, Impraise, Synergita, Betterworks, Performance Culture, PerformanceHub, 10xPerformance, Culture Amp, Performly, Employee Success Platform, Leapsome and EmpowerPoints.
Some top alternatives to Mirro includes Synergita, Betterworks, Performance Culture, Kallidus Perform, Xactly Objectives, PerformanceHub, Steer, Workteam, 10xPerformance, Teamflect, Performly and Leapsome.
