Free and easy to use FTP client. So that you can transfer your edited files to your website.
Core FTP LE is the Lite version of the commercial product; it has an annoying nag screen on start-up, though, that might put you off. CoreFTP could be the one for you if you need to log on to a site that gives problems, and it also has a massive feature set. Its strength is probably the ease of use for such a powerful app.
CoreFTP has four particular strengths:
the best tricky-site access ability of any FTP client I've used.
an excellent GUI that makes it outstandingly easy to use.
a massive feature set that somehow doesn't slow it down.
good on-screen real-time logging, which not all clients have.
There are sites - especially those with extra security, where it takes about 8 seconds to connect - that cause some FTP clients insurmountable problems; CoreFTP will get you in. I couldn't log on to one site at all with WS_FTP and some of the others, but this one did the trick. The neat on-screen log display also lets you know what's happening if you have problems. You can force-view invisible files, like htaccess. The chmod feature is useful, you can set your directory and file permissions with a very clear interface; ditto the clear and fast site manager. There's a nice one-click reconnect to the last site in use.