Yes, both Plesk and Pantheon offer a Free Trial.
Plesk is designed for Large Enterprises, Medium Business and Small Business.
Pantheon is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Plesk Starts at $9.90/Month when Billed Yearly whereas for Pantheon Starts at $29/Month.
Some top alternatives to Plesk includes 10Web, HostLaunch, Apps Panel, Vpsmodel, Qualified, Workvivo, servr, Zoop, Templ, WordOps, RunCloud and Pantheon.
Some top alternatives to Pantheon includes Super, Qualified, Workvivo, AirOps, Webapp.io, OpsTech, SuperOps PSA Software, WebEnliven Solutions, DEITY Falcon, WordOps and IFTTT.