Yes, both HelpHub and GoGoWorx offer a Free Trial.
HelpHub is designed for Medium Business and Small Business.
GoGoWorx is designed for Large Enterprises, Medium Business and Small Business.
Pricing for HelpHub Starts at $39/Month when Billed Yearly whereas for GoGoWorx Starts at $5/User/Month.
Some top alternatives to HelpHub includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, Teamwork Desk, Support Hub, Motadata HelpDesk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, LabiDesk, HESK, Helpjuice and KnowledgeBase.
Some top alternatives to GoGoWorx includes Zoho Wiki, SmartSupport, Drupal Wiki, Eniston, TWiki, Wiki Valley, Microsoft Azure, KnowledgeOwl, KnowledgeBase and ProProfs Knowledge Base.