Yes, both NinjaMock and Mockplus offer a Free Trial.
NinjaMock is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Mockplus is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for NinjaMock Starts at $7.69/Month when Billed Yearly whereas for Mockplus Starts at $5.95/User/Month when Billed Yearly.
Some top alternatives to NinjaMock includes Miro, HotGloo, Pidoco, Balsamiq, Wireframe.cc, Wirify, Claritee, Stage, Mockup Clips and Zen Wireframe.
Some top alternatives to Mockplus includes Miro, Adobe XD, NinjaMock, Balsamiq, Axure RP, Wireframe.cc, Claritee, Stage, Previewed and Zen Wireframe.