Yes, both CloudTalk and Vonage Business offer a Free Trial.
CloudTalk is designed for Large Enterprises, Medium Business and Small Business.
Vonage Business is designed for Medium Business and Small Business.
The starting price of CloudTalk begins at $25/User/Month when Billed Yearly, while pricing details for Vonage Business are unavailable.
Some top alternatives to CloudTalk includes Nextiva, CallTools, HoduCC, Call Center Studio, Truly, Aircall, JustCall, Dialpad Contact Center, RingCentral Contact Center, VoxDesk and Squaretalk.
Some top alternatives to Vonage Business includes CloudTalk, RingCentral Office, Jive Voice, 4PSA VoipNow, Alianza, Voxloud, MightyCall, Ringover, Voxbi, iPlum and Comcast Business VoiceEdge.