Yes, both OpenCart and HelpCrunch offer a Free Trial.
OpenCart is designed for Freelancers, Medium Business and Small Business.
HelpCrunch is designed for Large Enterprises, Medium Business and Small Business.
The starting price of HelpCrunch begins at $12/User/Month when Billed Yearly, while pricing details for OpenCart are unavailable.
Some top alternatives to OpenCart includes and undefined.
Some top alternatives to HelpCrunch includes ZoomInfo Chat, ClickDesk, LiveAgent, LiveChat, DeskMoz, Zendesk Chat, Intercom, LiveHelpNow, Comm100 Live Chat, HelpOnClick and Smartchat.