Yes, both Crisp and txt.me offer a Free Trial.
Crisp is designed for Individuals, Freelancers, Medium Business and Small Business.
txt.me is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Crisp Starts at $25/User/Month whereas for txt.me Starts at $9.99/User/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 txt.me includes ZoomInfo Chat, LiveAgent, LiveChat, DeskMoz, LiveHelpNow, Smartchat, ApexChat, LiveCaller, ChatFlow247, Let's Connect and Liveo.Chat.