Yes, both mFax and Nextiva offer a Free Trial.
mFax is designed for Large Enterprises, Medium Business and Small Business.
Nextiva is designed for Large Enterprises, Medium Business and Small Business.
Pricing for mFax Starts at $10/Month when Billed Yearly whereas for Nextiva Starts at $18.95/User/Month when Billed Yearly.
Some top alternatives to mFax includes Nextiva, HelloFax, XM Fax, eFax, Sfax, MyFax, WestFax, FAX.PLUS, Fax.to, HylaFAX Enterprise and iFax.
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.