Yes, both Crisp and Channel.io offer a Free Trial.
Crisp is designed for Individuals, Freelancers, Medium Business and Small Business.
Channel.io is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Crisp Starts at $25/User/Month whereas for Channel.io Starts at $30/Month when Billed Yearly.
Some top alternatives to Crisp includes ZoomInfo Chat, LiveChat, LiveEngage, Pure Chat, DeskMoz, MyLiveChat, Intercom, Smartchat, ChatFlow247, Freshchat and Let's Connect.
Some top alternatives to Channel.io includes ZoomInfo Chat, LiveAgent, LiveChat, LiveEngage, DeskMoz, Zendesk Chat, Lime Talk, Smartchat, LivePerson, Let's Connect and Liveo.Chat.