Yes, both HelpKit and ClickHelp offer a Free Trial.
HelpKit is designed for Large Enterprises, Medium Business and Small Business.
ClickHelp is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for HelpKit Starts at $15/Month when Billed Yearly whereas for ClickHelp Starts at $150/Month when Billed Yearly.
Some top alternatives to HelpKit includes Notion, SmartSupport, FromNotion, HelpHub, Qualified, Workvivo, KnowledgeBase, Answerly, ClickHelp and IFTTT.
Some top alternatives to ClickHelp includes GitBook, SmartSupport, HelpHub, Uphint, DeveloperHub.io, Qualified, Workvivo, Docstring, Slick, Dokit and PointHelp.