Yes, both Revelation helpdesk and Deskero offer a Free Trial.
Revelation helpdesk is designed for Large Enterprises, Medium Business and Small Business.
Deskero is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Revelation helpdesk Starts at $19/Year whereas for Deskero Starts at $9/User/Month when Billed Yearly.
Some top alternatives to Revelation helpdesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Deskero, HelpDesk, SysAid, Jitbit Helpdesk, eStreamDesk, EvantoDesk, ReadyDesk, HelpdeskEddy, Sitehelpdesk, Trakdesk and BoldDesk.
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.