Yes, both SignalZen and Crisp offer a Free Trial.
SignalZen is designed for Large Enterprises, Medium Business and Small Business.
Crisp is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for SignalZen Starts at $25/Month whereas for Crisp Starts at $25/User/Month.
Some top alternatives to SignalZen includes ZoomInfo Chat, LiveChat, Crisp, MyLiveChat, Zendesk Chat, Lime Talk, Chatlio, HelpOnClick, Smartchat, LinkedChat and Sitelip.
Some top alternatives to Crisp includes ZoomInfo Chat, LiveChat, LiveEngage, Pure Chat, DeskMoz, MyLiveChat, Intercom, Smartchat, ChatFlow247, Freshchat and Let's Connect.