18) Anti-Virus Pro Concerned about malware, viruses and SMS spam? Anti-Virus Pro is a comprehensive security suite for Android that can scan apps, files, settings and media in real time. Paid: $9.99.
19) ASTRO File Manager This app might just be essential. It's a full-featured file manager that lets you view and manage the files on your Droid without having to plug it into your computer. You can even use it to backup your Android apps to your SD card. Free and paid. The free version features ads. The paid version goes for $2.99 and removes the ads.
20) Dropbox This client for the Dropbox cloud-sharing file storage service makes it easy to get files onto your phone without explicit synching. You can shovel files into it from any of your computers and then access them from any other computer or phone. Free.
21) Layar Turn your phone into an Augmented Reality device with Layar. It uses your phone's camera, compass and GPS data to identify your location and field of view, retrieves data based on those geographical coordinates and then layers that data over the camera view. Free.
22) ESPN ScoreCenter Get comprehensive ESPN sports coverage on your Android phone with this app. It provides near-real-time scores and schedules. Free.
23) Yelp Yelp for Android determines your current location and then lets you search for nearby businesses, read reviews and so on. It also lets users filter by "Price," "Open Now," "Special Offers" and "Hot on Yelp." Free.
24) Lookout Want to protect your phone? Lookout does just about everything. It provides security against mobile viruses, malware and hackers, backs up your data and even locates your lost or stolen device on a map from the Web. And if you can't find it, you can use Lookout to make your phone "scream" or simply wipe out all the data on it. Free.
25) Nimbuzz This communication app allows you to connect to all your online friends, whether they use Skype, Facebook, Windows Live Messenger, Yahoo!, GoogleTalk, AIM, ICQ, MySpace, or StudiVZ Hyves. Free.
26) GDocs for Android This editor/viewer for Google Documents allows you to create, edit, view, import, export, send documents and sync them with your Google Docs account. Free.
27) EStrongs File Explorer File Explorer is a local and network file manager that provides a file explorer for both the local phone and your remote computer. You can view files on your phone and in your computer's shared folder and transfer files between them. You can even play audio and video, browse images and view text. Free.
28) Google Voice Streamline and consolidate your phones with this app. It gives you a single phone number that rings all your phones. In addition it saves all your voicemail online and even transcribes your voicemail into text. It offers a host of other features too. Free.
29) Astrid Task Todo List Get yourself organized with this todo list app. It features tagging, timers, reminders, smart task sorting and even tracks partial progress. You can sync your todo list with Remember the Milk, which can sync with Gmail. Free.
30) Thinking Space Thinking Space is a mind mapping application that allows you to visualize, structure and classify ideas. You can create nodes, add notes to them and arrange them, all with a UI that makes it a snap to work with. The maps you create with this app are also compatible with PC-based Xmind and Freemind. Free.
31) SwitchPro Widget This cool little app gives you the ability to control 17 of your Android phone's functions directly from one of your homescreens. You can turn 3G, Wi-Fi and Bluetooth on and off, adjust your screen's brightness, even reload your SD card after transferring files. Free.
32) Twitter for Android Twitter's branded client is among the best of the Twitter clients available for Android. It hasn't closed the gap with Twitter for iPhone yet, but it's getting there. Free.
33) Facebook The Android Facebook app has its challenges, but it enables account syncing between your Facebook friends and the contacts on your phone. Free.
34) Dolphin Browser HD Don't like the stock browser that came with your Android phone? The Dolphin Browser HD adds a boatload of features, including multiple tab viewing, full multitouch gestures, a thumbnail "flick" menu, gesture-based search and URLs, a YouTube downloader and browser extensions. Free.
35) Opera Mini web browser Looking for more robust browser support? The Opera Mini web browser is super fast and adds features like tabbed browsing, multiple home page tiled Web sites, sync bookmarks between your desktop and phone and more. Free.
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