Vonage Business offers Free Trial, but PBX Plus by 500apps does not.
PBX Plus by 500apps is designed for Large Enterprises, Medium Business and Small Business.
Vonage Business is designed for Medium Business and Small Business.
The starting price of PBX Plus by 500apps begins at $9.99/Month when Billed Yearly, while pricing details for Vonage Business are unavailable.
Some top alternatives to PBX Plus by 500apps includes CloudTalk, VoIPstudio, Vonage Business, Vodia PBX, 3CX, VoiceIQ, Voxloud, TR Cloud VoIP, MightyCall, Continent Telecom IP PBX and Comcast Business VoiceEdge.
Some top alternatives to Vonage Business includes CloudTalk, RingCentral Office, Jive Voice, 4PSA VoipNow, Alianza, Voxloud, MightyCall, Ringover, Voxbi, iPlum and Comcast Business VoiceEdge.