Yes, both Snappy and Deskero offer a Free Trial.
Snappy is designed for Large Enterprises, Medium Business and Small Business.
Deskero is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Snappy Starts at $15/User/Month whereas for Deskero Starts at $9/User/Month when Billed Yearly.
Some top alternatives to Snappy includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Deskero, Teamwork Desk, HelpDesk, SysAid, Jitbit Helpdesk, lemtalk, Spiceworks Help Desk, LabiDesk, HESK, Support.cc by 500apps 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.