A little while back Chris Tingom of Brainfuel asked what FTP programs everyone used, since he could not find one with an interface that suited him.
In the end he made a list of the software mentioned to him via comments on the post, and surprisingly to me, there was only one Linux tool mentioned.
Here are a few items from the list:
Windows
- Igloo FTP
- CuteFTP
Mac
- Fetch
- Transmit
*Nix
- gFTP
Feel free to list your favorites in the comments, and if you use Linux, or even just know of a good FTP application for Linux, please let me know. Also, check out the original list for links to the applications.