TouchDown is an app for an Android device that syncs Email, Calendar, Contacts, Tasks, and Notes with a Microsoft Exchange server.  Outlook can also sync with the Exchange server, allowing Exchange to be the conduit for syncing between Outlook and the Android device.  Touchdown can easily sync between Microsoft's Exchange 365 adding the ability to sync Tasks and Notes with the Android, which the built-in Android Exchange sync does not perform.

NitroDesk is the company that produces TouchDown and in May of 2014, Symantec purchased NitroDesk.  This means TouchDown is now a Symantec product.  The NitroDesk website is still active, but they only have a minor amount of information about TouchDown listed.  

General
  • Widgets
  • SSL Support
  • Client Certificates
  • PIN Enforcement
  • Remote Data Wipe
  • Email-initiated Data Wipe
  • SMS confirm on Wipe
  • Manual and Scheduled Sync
  • Data Encryption at rest
  • Encrypt Attachments on SD card
  • S/MIME Signing and Encryption
  • Tablet optimized version MDM support 
  • GZIP Compression Support
Email
  • Push Mail
  • HTML Email
  • Download Attachments 
  • Smart Forward/Reply
  • Multi-Select
  • Search (Device-Local) & Server
  • Email Folders
  • Move to Folder
  • Meeting Responses
  • Out of Office (Exchange 2007)
  • Custom HTML Signatures
  • Import Signatures from File
  • Custom & Speech Notifications
  • Convert to Event or Task
  • Flag for Follow-up
Contacts
  • Push Updates 
  • Contact Photos
  • Edit/Update/Delete
  • Filter and Sort
  • Export to PhoneBook
  • Auto Update PhoneBook
  • Quick Search
  • Email/SMS/Call from Contact
  • GAL Search & import
  • Import from Call Log
  • Show Related Emails
  • Show Related Events
Calendar
  • Push Updates
  • Edit Appointments
  • Delete Appointments
  • Reminders
  • Create From Email
  • Auto Snooze
  • Agenda/Day/Week/Month Views
  • Agenda View supports Due Tasks
  • Accept/Decline meetings
Tasks
  • Push Updates
  • Filter and Sort
  • Mark Complete
  • View/Edit/Create Tasks
  • Create From Email

Notes

  • Push Updates
  • View & Edit Notes 
  • Create Notes 

If you are interested in more information about TouchDown, visit their website at the link below:

www.nitrodesk.com