Android: If you're looking for an easy to use and feature-rich FTP client for your Android phone, AndFTP is a robust client for Android Phones with support for FTP, FTPS and SFTP transfers, as well as SSH key support.
Earlier this year we showed you how to enable FTP access to your Android phone using SwiFTP. AndFTP helps in the opposite direction with support for multiple FTP protocols like FTP, FTPS and SFTP. AndFTP also supports SSH RSA/DSA security keys and multiple profiles for accessing and managing more than one FTP site. In addition to remote file browsing AndFTP has a local file browser.
AndFTP is free and works wherever Android does. Have a favourite utility for your Android phone? Let's hear about it in the comments.