Android: If you'd like easy wireless access to files on your Android phone SwiFTP is a simple open-source application that turns your phone into an FTP server.
Accessing the file directory of your phone without tethering it directly to your computer is a great convenience. SwiFTP turns your Android phone into an FTP server which is accessible via Wi-Fi or through their proxy server for remote access — currently you can only use their proxy server, hopefully future versions will allow you to set your own.
Installation is simple, download SwiFTP from the Android Market, run it, click the "Setup" button and specify the username, password and port number for your FTP server and you're ready to go. Any other settings tweaks are for your own personal preferences like what directory you'd like as the root of the FTP directory. You can use an FTP client on your computer or just map your phone as a network location like so:
Download SwiFTP by searching in the Android Market or scanning the QR code to the right. For more information on mapping your phone as a network location you can check out the via link to see the walk through at Addictive Tips.
Have a cool app for accessing your Android or other mobile device? Let's hear about it in the comments.