net2ftp is a web-based FTP client written in PHP

Features
 - Navigate the FTP server
 - Upload and download files
 - Edit files (WYSIWYG and syntax highlighting)
 - View code with syntax highlighting
 - Copy, move, delete (also to 2nd FTP server)
 - Rename and chmod (also recursive)
 - Zip and unzip files
 - Install software
 - Search for words or phrases
 - Calculate the size of directories and files

WWW: http://www.net2ftp.com/