Yes, both UseDesk and Deskero offer a Free Trial.
UseDesk is designed for Large Enterprises, Medium Business and Small Business.
Deskero is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for UseDesk Starts at $45/Month whereas for Deskero Starts at $9/User/Month when Billed Yearly.
Some top alternatives to UseDesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Deskero, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, Help Scout, CRMdesk, LabiDesk, DeskXpand, BoldDesk and Little SaaS Communication.
Some top alternatives to Deskero includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Teamwork Desk, SeamlessDesk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, ReadyDesk, Trakdesk, LabiDesk, DeskXpand and BoldDesk.