FireFTP is a powerful add-on for Firefox to support FTP. It’s a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers. It’s a GUI-based FTP client that could be fetched with the lowest cost. It has several advantages:
As a plugin, it only affects Firefox, which is similar to Chrome’s sandbox.
As a plugin, it supports multiple character sets, especially GBK, so that Chinese FTP servers that do not use Unicode (UTF-8) can also be easily connected.
It’s GUI-based, at least it is not as depressing as using the ftp.exe provided by Windows.