Yes, both Zingtree and Zendesk Talk offer a Free Trial.
Zingtree is designed for Medium Business and Small Business.
Zendesk Talk is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Zingtree Starts at $8/Month whereas for Zendesk Talk Starts at $9/User/Month.
Some top alternatives to Zingtree includes Nextiva, Dialer360, Call Center Studio, TelebuHub, Truly, Aircall, Ozonetel CloudAgent, ice Contact Center, ipSCAPE and LeadDesk.
Some top alternatives to Zendesk Talk includes Nextiva, TalkDesk, uContact, HoduCC, Call Center Studio, TelebuHub, Zendesk Support, VoxDesk, Zendesk Chat and Freshdesk Contact Center (Formerly Freshcaller).