Zoho CRM Plus is a customer experience platform that unifies the sales, support and marketing teams of your business on a unified interface, which gives your customer-facing teams a 360-degree view of your customers across all touch points to provide a seamless and consistent experience at every stage of the customer journey.
Zoho One is an all-in-one suite that enables you to run your entire business. It includes 35 web applications, and gives everything you need to grow your organization, from sales, marketing, customer support, finance, recruitment, to HR, and much more.
Note: For Zoho CRM Plus, you can purchase user licenses for your customer-facing teams. With Zoho One, you need to purchase user licenses for all the employees in your organization.