34) Documents To Go This app puts Office productivity applications in the palm of your hand. It allows you to view, edit and create Microsoft Word, Excel and PowerPoint documents, as well as Adobe PDF files. You can even use the full suite of formatting options. Free and paid. The free version only gives you the ability to view documents, while the paid version unlocks all the features. $14.99.
35) Dropbox Dropbox is a client for the Dropbox cloud-sharing file storage service. It makes it easy to get files onto your phone without explicit synching. You can add files to it from any of your computers and then access them from any other computer or phone. Free.
36) MangoSpring Mobile MangoSpring Mobile is a personal, team and company collaboration tool that allows you to share and update documents on the go. Free.
37) Document Scanner This app allows you to scan documents with your phone's camera, convert it to PDF and e-mail the PDF to anyone. You can even upload the PDF to Google Docs. Paid: $2.98.
38) 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). Free. SMS Backup + This app automatically backs up SMS, MMS and call log entries to a separate label in your Gmail account. Free.
39) QuickOffice Connect Mobile Suite This Microsoft Office productivity suite for Android devices allows you to view and edit Word, Excel and PowerPoint files with integrated access to multiple remote storage providers. Paid: $15.
40) 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. Free.
41) EverPaper EverPaper is a simple but excellent Instapaper client. It doesn't support folders yet, but it's under constant development. It also syncs with EverNote. Free.
42) RepliGo Reader A PDF reader that can be used to view Gmail PDF attachments, online PDF documents or PDF files saved to your media card. It features a reading view that reformats pages into a single column, and offers support for embedded fonts, PDF bookmarks and text search. Paid: $4.95.
43) Bump Select a contact or photo and then bump phones with another person who is also running the Bump app. It uses location information and the timing of the bump to detect the two phones involved and transfer the file between the two devices over the Internet. The Android version is even compatible with the iPhone version.
44) Vlingo Need to text, call, tweet or set your Facebook status and your hands are already occupied? That's no problem if you have Vlingo, which allows you to operate your Android phone with your voice. It even works with a wireless Bluetooth headset. Free.
45) 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. Free.
46) PdaNet Use USB Tether or Bluetooth DUN to connect your laptop to the Internet using your Android phone as a modem. You can use your phone to connect via 3G data, Wi-Fi and even VPN. Free and paid. The free version blocks access to secure Web sites. The premium version goes for $23.95.
47) 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. Free.
48) SPB TV Get TV in the palm of your hand with this app. It's an IP-TV solution optimized for mobile devices that offers more than 100 subscription-free TV channels, including the major networks. Paid: $9.95.
49) Qik Stream live video from your Android phone to the Internet with this app. You can give your friends and family a personal URL with which to view your show when you broadcast and then keep the video archived for later viewing. You can also share your video via Facebook, Twitter and YouTube. The app is free but the service is not.
50) 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. Free.