Yes, both LiveAgent and Channel.io offer a Free Trial.
LiveAgent is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Channel.io is designed for Large Enterprises, Medium Business and Small Business.
Pricing for LiveAgent Starts at $15/User/Month whereas for Channel.io Starts at $30/Month when Billed Yearly.
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.
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.