Must have development tool Rated 5 out of 5 stars
FireFTP allows you to quickly perform FTP functions inside your browser tab; this makes minor changes to your site extremely fast. FireFTP finds a great balance between too many bells and whistles and simplicity, giving you the power to do what you need to do in a typical FTP sessions and not clutter the addon with advanced FTP functions.
FireFTP is easy to use to add new content to a site, because it opens in a tab on your browser rather than being whole other program. FireFTP is one of my core addons for web development and allows me to make those minor changes and updates even quicker.