Yes, both calltrak and Nimbata offer a Free Trial.
calltrak is designed for Medium Business and Small Business.
Nimbata is designed for Large Enterprises, Medium Business and Small Business.
Pricing for calltrak Starts at $29.95/Month whereas for Nimbata Starts at $29/Month.
Some top alternatives to calltrak includes ResponseTap, AvidTrak, Calltracks, CallView 360, TeleCapture, Call Tracking Pro, Call Tracker, Caller Insight, CallTracking and FreeCallTracking.AI.
Some top alternatives to Nimbata includes CallTrackingMetrics, CallRail, Calltracks, calltrak, TeleCapture, Call Tracking Pro, Call Tracker, Caller Insight, TrackDrive and CallTracking.