Yes, both Wowdesk and HelpDesk offer a Free Trial.
Wowdesk is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
HelpDesk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Wowdesk Starts at $6/User/Month whereas for HelpDesk Starts at $29/User/Month when Billed Yearly.
Some top alternatives to Wowdesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Teamwork Desk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, eStreamDesk, ReadyDesk, UseDesk, Milldesk, AzureDesk and BoldDesk.
Some top alternatives to HelpDesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, SupportBee, Teamwork Desk, SysAid, Jitbit Helpdesk, Snappy, Helpspot, ReadyDesk, HelpdeskEddy, Help Desk Premier, Support.cc by 500apps and BoldDesk.