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Nextiva offers Free Trial, but Sharpen does not.
Sharpen is designed for Large Enterprises, Medium Business and Small Business.
Nextiva is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Sharpen Starts at $5 whereas for Nextiva Starts at $18.95/User/Month when Billed Yearly.
Some top alternatives to Sharpen includes Nextiva, Claritysoft, Knowlarity, XCALLY, contactSPACE, uContact, HoduCC, Call Center Studio, Dialpad Contact Center, Callision and ipSCAPE.
Some top alternatives to Nextiva includes uContact, Call Center Studio, Grasshopper, Dialpad Contact Center, Vonage Contact Center, RingCentral Contact Center, ipSCAPE and OmniOMS Customer Communication Management Suite.