Yes, both Salesforce and Zendesk Talk offer a Free Trial.
Salesforce is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Zendesk Talk is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Salesforce Starts at $25/User/Month whereas for Zendesk Talk Starts at $9/User/Month.
Some top alternatives to Salesforce includes Salesforce Sales Cloud, Pipedrive, Thryv, Vendasta, Hubspot Marketing Hub, Dynamics 365 Marketing, ClickUp, Zoho CRM, HubSpot CRM, Microsoft Dynamics 365 for Sales, Netsuite CRM, Keap, Wisdom CRM, SalesCRM, SimpleCRM and Zoho CRM Plus.
Some top alternatives to Zendesk Talk includes Nextiva, TalkDesk, uContact, HoduCC, Call Center Studio, TelebuHub, Zendesk Support, VoxDesk, Zendesk Chat and Freshdesk Contact Center (Formerly Freshcaller).