Yes, both VoIPstudio and CloudPhone offer a Free Trial.
VoIPstudio is designed for Large Enterprises, Medium Business and Small Business.
CloudPhone is designed for Large Enterprises, Medium Business and Small Business.
Pricing for VoIPstudio Starts at $4.99/User/Month whereas for CloudPhone Starts at $24.99/Month.
Some top alternatives to VoIPstudio includes Voiptime, CloudTalk, Dialpad Talk, Vonage Business, Vodia PBX, PBX Plus by 500apps, Voxloud, MightyCall, Continent Telecom IP PBX, iPlum and OpenPhone.
Some top alternatives to CloudPhone includes Dialpad Talk, Vonage Business, HotTelecom, Textable, iTeleCenter, Ringover, YOOTOK, Qualified, Workvivo, Simple Phones, OpenPhone and MyOperator.