Yes, both Quickbooks and Zendesk Sell offer a Free Trial.
Quickbooks is designed for Individuals, Freelancers, Medium Business and Small Business.
Zendesk Sell is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Zendesk Sell begins at $19/User/Month when yearly, while pricing details for Quickbooks are unavailable.
Some top alternatives to Quickbooks includes Xero, Freshbooks, Sage Accounting (Sage One), Zoho Books, easybook.io, QuickFile, AccountingSuite, Sage Business Cloud Accounting, Wave and Sage 50cloud Accounting.
Some top alternatives to Zendesk Sell includes Salesforce Sales Cloud, Pipedrive, Thryv, Vendasta, Hubspot Marketing Hub, ClickUp, Zoho CRM, Salesforce, HubSpot CRM, Pipeliner CRM, Keap, SalesCRM, SimpleCRM, Snapforce CRM and Pipeline CRM.