Web-to-Host Server setup exists in four variants, shown below in increasing features set order:
Web-to-HostSetup.msi - standard setup.
Web-to-HostSetup-RDE.msi - RDE-enabled setup.
Web-to-HostSetup-Citrix.msi - Citrix-enabled setup.
Web-to-HostSetup-Eval.msi - fully featured 30 day evaluation setup.