Android: ESET Mobile Security is a full suite of security and privacy tools rolled into one app. Full-phone antivirus and malware scanning, call/SMS/MMS blacklisting, and a host of anti-theft features are all accessible from the main screen. As if that weren't enough, the app also has built-in system monitoring functions to show you every running process along with its resource usage. The app's in beta at the moment, but it runs as smooth as it looks—and it's free. More »

If you're still waiting for Android 2.3 Gingerbread, we recommend checking out CyanogenMod 7. It not only brings Gingerbread to tons of Android phones, but other great features like canned SMS responses, over- (or under-) clocking, and a new simple theme engine. More »

Android: If you've been unhappy with the way Dropbox's mobile app only uploads files manually, you'll want to check out Titanium Media Sync, which will constantly sync folders from your phone to Dropbox, just like Dropbox does on the desktop. More »

Android: If you'd like to be able to tell who's emailing, texting, or calling you without even taking your phone out of your pocket, free app WhoIsIt will let you assign specific ringtones and vibration patterns to each contact on your phone. More »

Android: There are a lot of popular utilities for Android, from task killers, app switchers and beyond. Smartbar combines multiple useful utilities into one simple app and puts them in your menu bar for quick access. More »