Yes, both Microsoft Dynamics 365 for Sales and Salesforce Service Cloud offer a Free Trial.
Microsoft Dynamics 365 for Sales is designed for Large Enterprises, Medium Business and Small Business.
Salesforce Service Cloud is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Microsoft Dynamics 365 for Sales Starts at $65/User/Month whereas for Salesforce Service Cloud Starts at $25/user/month when yearly.
Some top alternatives to Microsoft Dynamics 365 for Sales includes Salesforce Sales Cloud, Pipedrive, Thryv, Vendasta, ClickUp, Zoho CRM, Freshsales, Salesforce, SalesCRM, SimpleCRM, Simply CRM, Client Book CRM, webCRM, Snapforce CRM, DigitalCRM.com, CRM.io by 500apps and CRMSuite.
Some top alternatives to Salesforce Service Cloud includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, HubSpot Service Hub, Help Scout, UseDesk, LabiDesk, AzureDesk, HESK and BoldDesk.