Yes, both Microsoft Dynamics 365 for Sales and Ring.io offer a Free Trial.
Microsoft Dynamics 365 for Sales is designed for Large Enterprises, Medium Business and Small Business.
Ring.io is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Microsoft Dynamics 365 for Sales Starts at $65/User/Month whereas for Ring.io Starts at $69/User/Month.
Some top alternatives to Microsoft Dynamics 365 for Sales includes Thryv, Salesforce Sales Cloud, monday sales CRM by monday.com, Pipedrive, Zoho CRM, Vendasta, ClickUp, Freshsales, Salesforce, SalesCRM, SimpleCRM, Simply CRM, Client Book CRM, webCRM, Snapforce CRM, DigitalCRM.com, CRM.io by 500apps and CRMSuite.
Some top alternatives to Ring.io includes Compass Payments Suite, Dialer360, Call Center Studio, Truly, Dialpad Contact Center, Channels, ice Contact Center, RingCentral Contact Center, Squaretalk and CloudCall.