Receiver for HTML5 is a clientless Receiver that runs inside a
browser. Applications running on one XenApp server open in the same
browser tab on the endpoint. To easily switch between the applications
in a browser tab, you just need to use the app switcher.
The App Switcher for the client side is introduced in HTML5 receiver
2.0. Till now, it had to be installed on the VDA using a separate
package that installed the app switcher exe file. The installed VDA app
switcher uses a processor-intensive enumeration to identify the list of
running applications in the session.
HTML5 receiver 2.0 bundles this feature within the HTML5 receiver.
The app switcher doesn't need to be installed as a separate executable
on the VDA. The new app switcher is completely implemented on the client
side, which reduces the load on the VDA. Previously installed VDA app
switchers should be removed to leverage the new client side app
switcher.
Client side app switcher runs in two modes:
- Taskbar mode
- Grid-view mode
Read the entire Citrix article here, App Switching Made Easy with Receiver for HTML5