1) TiKL Touch to Talk (PTT) Turn your Android phone into a walkie talkie with this app. It provides push to talk capabilities between Android phones without additional hardware and without using minutes. Communication is near instantaneous on 3G and 4G networks.
2) Lookout Mobile Security This app protects your phone from viruses and spyware, and scans new apps as you install them. It also includes a data backup function, and the ability to locate your phone on a map and activate an alarm if you've lost it.
3) Handcent SMS Handcent SMS supercharges your texting with full support for SMS and MMS, group sending options and backup and restore features for SMS and MMS. Other features include the ability to customize your look with themes and SPAM filtering options.
5) Ringdroid Use this app to create and edit ringtones for your Android phone. You can start with a track from your library or record a new ringtone directly on your phone.
6) Gasbuddy Find Cheap Gas This app provides comprehensive, real-time gas prices in your area (US and Canada) with maps. Users who pitch in by reporting gas prices in their area can win free gas.
7) eBuddy Messenger This comprehensive IM client allows you to connect to multiple MSN (Windows Live), Facebook, Yahoo, AIM, ICQ, GTalk, Hyves and MySpace accounts all at once. It shows all your contacts in one list and runs in the background. IMs are sent as data, not SMS.
8) Mr. Number Call Block Hate getting unwanted calls or texts? This app may be the answer to your prayers. It can block calls and texts from any number, any area code or prefix, all private/restricted calls, or whitelist your contacts and block everyone else. Y can block calls by picking up and hanging up or sending to voicemail. It even automatically blocks known spammers (US only).
9) Google Chrome to Phone Run the Chrome browser on your computer? This app lets you share links, maps and currently selected phone numbers and text between your computer running Chrome and your phone.
10) Android System Info This app is a detailed dashboard and task manager for your Android phone, providing information on exactly what's going on in its hardware and software. The dashboard shows details like battery life, internal memory, SD card storage, RAM usage, uptime, network type and IP address. The tasks menu provides detail on all the processes running on your phone. There are a multitude of other details and features too.
11) SMS Backup + This app automatically backs up SMS, MMS and call log entries to a separate label in your Gmail account.
12) AP Mobile Stay on top of breaking print and video news with this app. You can even filter for local news using your ZIP code.
13) Listen This podcast client from Google allows you to listen to all your favorite podcasts, as well as search for new podcasts and download them.
14) PhotoShop.com Mobile Need to edit a photo on the go? This app from Adobe allows you to crop, rotate, color-correct or change images to black and white. It also integrates with PhotoShop.com online accounts.
15) Fusion Voicemail Plus Centralize all your voicemail boxes, including mobile, home and office, on your Android phone with this app. It can receive and display FAXes too.
16) US Traffic US Traffic provides traffic reports about your neighborhood and works anywhere in the US. It supplies detailed traffic incident information.
17) 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.
18) Evernote This app allows you to log, index and search all manner of information, from notes to audio to photos. For instance, you can take a photo of a white board and Evernote will recognize the text in the photo, index it and then allow you to find it later by entering a search term from the information on the white board. It even synchs with the Web.
19) WordPress for Android Are you a busy blogger on the go? This app allows you to post to and manage your WordPress blogs from your Android phone. You can post, moderate comments and get comment notifications.
20) ActionComplete ActionComplete is a robust task manager. It is built around projects you create, which are made up of individual actions that serve as milestones in the project. The app is based on the Getting Things Done (GTD) methodology created by David Allen in his book: Getting Things Done: The Art of Stress-Free Productivity.
21) Scanner Radio Use this app to listen to more than 2,300 publicly hosted fire, emergency, public safety, and weather scanner feeds. You can find feeds from the 50 currently most popular, or search by area, type or source. Or you can simply search for scanners near you.
22) Tuner gStrings Never be without an instrument tuner again. This chromatic tuner app measures sound pitch and intensity, allowing you to tune all manner of musical instruments.
23) Greed This RSS reader is built around its integration with Google Reader. It gives you offline access to your Google Reader articles and podcasts, and it provides notification for new articles. It also integrates with Instapaper.
24) Bluetooth File Transfer With this app, you can explore and manage the files on any Bluetooth-enabled device, receive files and send contacts. It's built on FTP and Object Push Profile (OPP).
25) MangoSpring Mobile MangoSpring Mobile is a personal, team and company collaboration tool that allows you to share and update documents on the go.
26) Pandora Radio Create your own custom, streaming radio stations with this app. If you're already a Pandora user on your PC, you can login to your account and listen to your existing stations while on the go.
27) handyCalc Calculator The app adds just about every calculator function you can think of to your Android phone, allowing you to put your scientific calculator in the drawer forever.
28) TV.com This app from CBS Interactive turns your Android phone into a television. Use it to watch video, including full episodes, from CBS, The CW, CNET, ET, Showtime, CBS News, CBS Sports and more.
29) Parcels This handy app lets you track all your packages in one place. Carriers supported include: Apple, Fedex, UPS, UPS Mail Innovations, Amazon.co.uk, Amazon.com, Amazon.de, DHL Express National (Germany), DHL (Germany), DPD Standard (Germany), GLS (Germany), Hermes, TNT, TNT International (Netherlands), TNT National (Netherlands), OnTrac Shipping, LaserShip, Posten (Norway), Post (Austria), Post (Switzerland), Posten (Sweden), USPS, DHL (USA), DHL Express (GB), Home Delivery Network (GB), Japan Post Int. Mail, CNE Express, Royal Mail, Spee-Dee Delivery (USA), Parcelforce.
30) Wifi Analyzer This handy app turns your Android phone into a Wifi analyzer. It shows nearby networks, their signal strength and the channels they're on. It's great for finding a strong signal or even an uncluttered channel on which to set up your own network.
31) Google Goggles Google Goggles allows you to search by taking a picture, which Google attempts to recognize and respond with relevant search results. It works well with pictures of books and DVDs, landmarks, logos, contact info, artwork, businesses, products, barcodes or text. It can recognize up to three items at once.
32) Time Recording Time Recording is an app that lets you manage your time sheet, including options like tasks, target time, hourly rate, paid overtime and multiple data/time formats. It also supports CSV export.
33) CallTrack This app logs your phone activity to your Google Calendar, allowing you to track who you've called or received calls from and when.
34) MightyMeeting Manage a library of PowerPoint presentations directly from your Android phone with this app. You can use the app to share the presentations via e-mail, blog, Twitter and Facebook, and you can also start or join Web meetings using it.
35) The Weather Channel Keep up with everything you need to know about the weather with this app. It features hourly, 36-hour and 10-day forecasts and live video from the TV channel.