Yes, both HappyFox and SeamlessDesk offer a Free Trial.
HappyFox is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
SeamlessDesk is designed for Medium Business and Small Business.
Pricing for HappyFox Starts at $29/Month when Billed Yearly whereas for SeamlessDesk Starts at $57/Month.
Some top alternatives to HappyFox includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Jira Service Desk, Freshdesk, Deskero, SeamlessDesk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, CRMdesk, ReadyDesk, HESK and BoldDesk.
Some top alternatives to SeamlessDesk includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, Deskero, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, ReadyDesk, Sitehelpdesk, HESK, Help Desk Premier, DeskXpand and Scopedesk.