FTP On The Go PRO (iOS) app for $6.99
An FTP client for the iPad, iPhone, and iPod touch. View and edit HTML/CSS/JS/PHP/ASP, or other files on your server with its built in editor to change your website from anywhere. View images and documents (JPG, PDF, DOC, XLS, PPT, etc) too.
All the features of a desktop FTP client and more, all in an easy to use but powerful package. PRO features enhanced iPad support, letting you fully take advantage of the iPad's large touchscreen--and it works amazingly well on your iPhone or iPod touch too.+