Yes, both Showell and Zomentum offer a Free Trial.
Showell is designed for Large Enterprises, Medium Business and Small Business.
Zomentum is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Showell Starts at $18/User/Month whereas for Zomentum Starts at $99/Month.
Some top alternatives to Showell includes Sales Desk, Enablix, Prezentor, Scaura, Veelo, SAP Sales Cloud, SalesHood, sales-i, Master-O and Zoomifier.
Some top alternatives to Zomentum includes Apollo.io, AroundDeal, CrankWheel, ZoomInfo Engage, EngageBay, Salesmate, Zendesk Sell, eSalesTrack, VanillaSoft, Salesvue, Sales Booster by Leadspicker, SalesHandy and Zoomifier.