Hi ,
these are three different products. The main difference is the technology

Below software suite connects your users to information on multiple hosts and servers across your organization.

• Make host connections. Connect to IBM, UNIX, Linux, OpenVMS, and HP hosts.
• Easily modernize green screens. Do it without rewriting the underlying application or having any specialized knowledge.
• Integrate the host and IAM. Easily extend IAM security benefits to host systems.
• Encrypt data in motion. Protect data with the latest SSL/TLS, SSH, FTP, and Kerberos technologies.
• Improve user productivity. Employ drop-down menus, graphs, phone systems, multiple tabs, multiscreen tables, hyperlinks, and Office productivity features.

Rumba Desktop:            Rumba Desktop operates on Windows systems like Windows 7 ,8,10. It works on Windows Server on Citrix and WTS.

OnWeb Web-to-Host:     This is a Browser based product. It deliver the Emuluation via a Java Applet or an ActiveX Control

Reflection ZFE:                Our Zero Footprint Web Access to Host Applications. No Java , no ActiveX. A simple and secure  HTML5 solution.