Yes, both LiveAgent and CloudApp offer a Free Trial.
LiveAgent is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
CloudApp is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for LiveAgent Starts at $15/User/Month whereas for CloudApp Starts at $8/User/Month.
Some top alternatives to LiveAgent includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, ClickDesk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, Help Scout, LabiDesk, LiveChat, Zendesk Chat, LiveHelpNow and Little SaaS Communication.
Some top alternatives to CloudApp includes Scribe, FireShot, Snapup, RecordScreen.io, Snagit, Droplr, Jumpshare, Screenrec and Snippyly.