Yes, both ReplyManager and LiveAgent offer a Free Trial.
ReplyManager is designed for Large Enterprises, Medium Business and Small Business.
LiveAgent is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for ReplyManager Starts at $39/Month when Billed Yearly whereas for LiveAgent Starts at $15/User/Month.
Some top alternatives to ReplyManager includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, Teamwork Desk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, eStreamDesk, EngageBay Helpdesk System, EvantoDesk, HelpdeskEddy, LabiDesk and BoldDesk.
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.