Yes, both Twilio Frontline and Sidekick offer a Free Trial.
Twilio Frontline is designed for Large Enterprises, Medium Business and Small Business.
Sidekick is designed for Large Enterprises, Small Business and Medium Business.
The starting price of Twilio Frontline begins at $20/User/Month, while pricing details for Sidekick are unavailable.
Some top alternatives to Twilio Frontline includes Apollo.io, AroundDeal, CrankWheel, ZoomInfo Engage, Microsoft Dynamics 365 for Sales, Salesinteract, EngageBay Sales CRM, SalesCRM, SalesLoft, Salesvue, Closely, RingCentral Engage Digital, SalesReach and SalesHandy.
Some top alternatives to Sidekick includes Apollo.io, AroundDeal, CrankWheel, ZoomInfo Engage, SmartSupport, ClientSuccess, Custify, Chameleon, HelpHero, Freshdesk Customer Success (Formely Freshsuccess), Experience Layer, Driftly, Supademo and PointHelp.