Zendesk Support offers Free Trial, but Catalyst does not.
Zendesk Support is designed for Large Enterprises, Medium Business and Small Business.
Catalyst is designed for Large Enterprises and Medium Business.
The starting price of Zendesk Support begins at $19/user/month when yearly, while pricing details for Catalyst are unavailable.
Some top alternatives to Zendesk Support includes Zoho Desk, ManageEngine ServiceDesk Plus, Deskero, Support Hub, HelpDesk, Desky, Help Scout, Salesforce Service Cloud, ReadyDesk, Sitehelpdesk, HESK and BoldDesk.
Some top alternatives to Catalyst includes and undefined.