Yes, both Exotel and CallFire offer a Free Trial.
Exotel is designed for Large Enterprises, Medium Business and Small Business.
CallFire is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Exotel Starts at $1,000 whereas for CallFire Starts at $99/Month.
Some top alternatives to Exotel includes Nextiva, Knowlarity, CloudTalk, Servetel, Call Center Studio, TelebuHub, CallFire, VCC Live, Ozonetel CloudAgent, VoiceIQ and Twilio Flex.
Some top alternatives to CallFire includes Calltracks, CallView 360, TeleCapture, INVOX, Call Tracking Pro, Call Tracker, Caller Insight, CallTracking, Calls to Clients and iovox.