Yes, both txt.me and LiveAgent offer a Free Trial.
txt.me is designed for Large Enterprises, Medium Business and Small Business.
LiveAgent is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for txt.me Starts at $9.99/User/Month when Billed Yearly whereas for LiveAgent Starts at $15/User/Month.
Some top alternatives to txt.me includes ZoomInfo Chat, LiveAgent, LiveChat, DeskMoz, LiveHelpNow, Smartchat, ApexChat, LiveCaller, ChatFlow247, Let's Connect and Liveo.Chat.
Some top alternatives to LiveAgent includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, ManageEngine ServiceDesk Plus, Freshdesk, ClickDesk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, Help Scout, LabiDesk, LiveChat, Zendesk Chat, LiveHelpNow and Little SaaS Communication.