Yes, both Olark and AzureDesk offer a Free Trial.
Olark is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
AzureDesk is designed for Large Enterprises, Medium Business and Small Business.
The starting price of AzureDesk begins at $33/User/Month when Billed Yearly, while pricing details for Olark are unavailable.
Some top alternatives to Olark includes ZoomInfo Chat, LiveAgent, LiveChat, LiveEngage, MyLiveChat, Zendesk Chat, Intercom, Smartchat, LinkedChat, ChatFlow247 and Freshchat.
Some top alternatives to AzureDesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Teamwork Desk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, ReadyDesk, HelpdeskEddy, LabiDesk, Help Desk Premier, Revelation helpdesk and BoldDesk.