Rated 5 out of 5 stars

I love fire ftp, and wouldn't change. I recommend it as a great ftp handler. The big problem is that after upgrading to FF 6.0, I cannot run it from tools menu anymore, the icon is nowhere to be found, and I have to run it manually with chrome://fireftp/content/fireftp.xul
Not really nice tho. I wish this bug will be fixed soon. I see there is a FireFTP button extension too, for toolbar, but it doesn't work for me.

This review is for a previous version of the add-on (1.99.5.1-signed). 

There's been some reorganization in the new Firefox. The new FireFTP button is listed under Tools->Web Developer. Alternatively, you can also add it to the toolbar by customizing - see also: http://support.mozilla.com/en-US/kb/how-do-i-customize-toolbars