Security and Personalization Applications

Pintail / MobileDefense: Find your Xperia X10 misplaced or lost. Sending an SMS with your PIN will receive an SMS with geo-location data and a Google map.
BioWallet: Biometric Authentication, using the iris of the eye taken from a photograph as a password. It is also an administrator password, digital signature and encryption of documents. It is very useful if you have good memory.

Ahome: full visual customization, you can install themes and widgets with new icons, wallpapers, screen new tabs, menus, fonts, widgets, docks and more for your Xperia X10
MyBackup Pro: Creates backup applications, contacts, call logs, bookmarks, SMS and MMS, mobile configuration, alarms, in a secure online server or SD card, and periodically and automatically. Sony Ericsson also has its own site to create backups of your Xperia X10 and it’s free, you just need to register.
Anycut: Create a shortcut to any function.
FlyScreen: Allows you to customize the home screen widgets blocked
WaveSecure (Android Developer Challenge in March since 2009) allows you to backup all data and remotely destroy all confidential information if lost or stolen.
Sweetdreams (1 post Android Developer Challenge 2009). helps you configure your Xperia X10 as you want, the options are endless. An example is that the level of volume / brightness will change according to time, GPS position or activity that is carrying the user.
Moov: Search. Just type a letter showing all files, images, music, videos, contacts, applications and games that begin with that letter.
Atrackdog: Manage the status of the applications installed on your Xperia X10 and notifies you if new updates, besides that it gives you a report of the most popular applications Android Market
Phonealyzr: Statistics of your Xperia X10
Keyboards: Keyboard Better