Yes, both Nimbata and WhatConverts offer a Free Trial.
Nimbata is designed for Large Enterprises, Medium Business and Small Business.
WhatConverts is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Nimbata Starts at $29/Month whereas for WhatConverts Starts at $30/Month.
Some top alternatives to Nimbata includes CallTrackingMetrics, CallRail, Calltracks, calltrak, TeleCapture, Call Tracking Pro, Call Tracker, Caller Insight, TrackDrive and CallTracking.
Some top alternatives to WhatConverts includes CallRail, Calltracks, calltrak, TeleCapture, Call Tracker, Caller Insight, TrackDrive, CallTracking, Trailhub and CallGear.