Yes, both Zendesk Chat and HelpOnClick offer a Free Trial.
Zendesk Chat is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
HelpOnClick is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Zendesk Chat Starts at $19/User/Month when Billed Yearly whereas for HelpOnClick Starts at $7.20/User/Month when Billed Yearly.
Some top alternatives to Zendesk Chat includes ZoomInfo Chat, LiveAgent, LiveChat, LiveEngage, Intercom, Comm100 Live Chat, Smartchat, raychat, Freshchat, RingCentral Engage Digital and Let's Connect.
Some top alternatives to HelpOnClick includes ZoomInfo Chat, ClickDesk, LiveAgent, LiveChat, Crisp, DeskMoz, MyLiveChat, Zendesk Chat, Provide Support, WebsiteAlive and Smartchat.