Yes, both Jive Voice and RingCentral Office offer a Free Trial.
Jive Voice is designed for Large Enterprises, Medium Business and Small Business.
RingCentral Office is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Jive Voice Starts at $19.95/User whereas for RingCentral Office Starts at $19.99/User/Month when Billed Yearly.
Some top alternatives to Jive Voice includes CloudTalk, Dialpad Talk, VoIPstudio, Vonage Business, Vodia PBX, VoiceIQ, 4PSA VoipNow, MightyCall, Ringover, Continent Telecom IP PBX and Comcast Business VoiceEdge.
Some top alternatives to RingCentral Office includes RingByName, VoIPstudio, Vonage Business, 3CX, 4PSA VoipNow, Infobip, Voxloud, MightyCall, Ringover, Voxbi and AT&T Office@Hand.