Apps
As of August 2011, the Zune Marketplace had 62 apps for the Zune HD, of which 42 are games. All of the apps and games are free. Apps available excluding games are Calendar, Fingerpaint, Stopwatch, Alarm Clock, Chord Finder, Facebook, Twitter, MSN Money, MSN Weather, Calculator, Piano, Metronome, Level, Drum Machine, Fan Prediction, Shuffle by Album, Windows Live Messenger, Notes, Email and Zune Reader. An extension to the Microsoft XNA framework providing development support for the Zune HD was released on September 16, 2009.[31] The Zune PC Software can be used for adding apps to the Zune HD.[32] The Windows Live Messenger app for the Zune HD was released on October 1, 2010, making Messenger available for all major mobile platforms. The email app was released for the Zune HD in April 2011 allowing users to sync with their email accounts and download folders and emails. The app is similar to the email interface on the Windows Phone.
No new apps have been released for Zune HD after August 2011.
Games
Several games have been released for the Zune HD, including portable versions of Audiosurf, Hexic, and Project Gotham Racing. Independent titles written with XNA are also available from multiple sources.
On April 20, 2010, an independent app developer released a port of Doom,[33] one of the first independent 3D games to be developed for the Zune HD, using OpenZDK.
Web browser
The browser features favorites and Bing search. The keyboard can be accessed by touching a text box, swiping up from the bottom bar of the browser and touching the address bar, or touching the magnifying glass (search) icon on the bottom bar of the browser. The keyboard has portrait orientation, with the keys bulging around the user's finger when touched. The web browser has pinch and stretch for zooming and page reorientation due to the built in accelerometer.[6] The Zune HD web browser scores 5/100 in the Acid3 test.[34] As of the launch, the Zune HD's web browser does not support Adobe Flash applications, such as video playback on YouTube, and no plans have been made to bring Flash support to the device.
With the 4.3 firmware update, browsing performance was improved, and users can change the Internet settings to display the browser optimized for a Mobile device or for a PC experience. In addition, users can now enable "auto correct" and "auto capitalize" when using the keyboard to enter information, making it easier to type content into the browser.
With the 4.5 firmware update, browsing performance was further improved. In addition, Smart DJ playlists, Picks, expanded video codec support, and the ability to download photos and sort favorites by name and date were included in the update.