HTC Sync is a System Utilities software developed by HTC Corporation. After our trial and test, the software is proved to be official, secure and free. Here is the official description for HTC Sync:
BS Editor: You can use HTC Sync™ to synchronize Outlook contacts and calendar or Outlook ExPress contacts (Android & HTC SMART)and the bookmarks of Web Browser between your computer and your HTC devices(Android only).
It also lets you install third-party Android applications on the phone & tablet, and bring your photos, videos, documents, songs, and playlists to your HTC devices(Android only).