Yes, both Axure Cloud and Mockplus offer a Free Trial.
Axure Cloud is designed for Large Enterprises, Medium Business and Small Business.
Mockplus is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Mockplus begins at $5.95/User/Month when Billed Yearly, while pricing details for Axure Cloud are unavailable.
Some top alternatives to Axure Cloud includes Figma, FigJam, Adobe XD, UXPin, UX-App, UserX, UserZoom, UXArmy, UX Metrics, Moyo App, Axure RP and Design with Focus.
Some top alternatives to Mockplus includes Miro, Adobe XD, NinjaMock, Balsamiq, Axure RP, Wireframe.cc, Claritee, Stage, Previewed and Zen Wireframe.