SOOTHE  Gotta agree - for a few bucks, Yummy is a totally awesome FTP client. If you don't have a few bucks, Cyberduck works.  
(Version 3.0.3)

SOOTHE  Why pay $30 for this when my copy of Yummy FTP ($25) has this exact same feature, plus it's a fantastic FTP client?  
(Version 1.0)

SOOTHE  YAY4MERLOT : I'm not sure why you decided to pick on Yummy. For example, does Flow or Forklift really bring anything new to FTP? No, and in fact as far as FTP is concerned those two 'new kids on the block' actually have far fewer features than Yummy, which has been around for literally years before those two by the way. Who, for example, was the first FTP client to bring Quick Look previews to the table. It was Yummy FTP. And as for reasons not to use Cyberduck, just look at PXQUIM's review below yours for one reason why. I'd MUCH rather spend a few bucks for an app that I can actually rely on. Your 'review' is not just 'a little harsh' it's totally unfounded.  
(Version 1.7.2)

SOOTHE  Considering that the last update to NF was 5 YEARS AGO and the update before that was SIX years ago, you have question the commitment of the developer to his customers...

Quite simply, even if NF 3 was the best FTP client on the planet (and it isn't), I wouldn't be investing my money in it now.

There are plenty of well supported products to consider. The crowd favorites are Transmit and CyberDuck, and of course there are the products that have stood the test of time - Fetch and Interarchy.  
(Version 3.0)

SOOTHE  Cabel, you never heard of Photoshop Elements? It's a cut down version of Photoshop for a lot less money ...  
(Version 3.1.2)

SOOTHE  Huh?

This isn't open source. Perhaps you're thinking of CyberDuck?

This is definitely not non-profit. Very much FOR profit lol  
(Version 4.5)