PERLMONKEY  At the moment YummyFTP is just 15$ with the coupon code ONLY15YUM (see official website)  
(Version 1.8)

PERLMONKEY  SJK: Let's face it, most people on Macupdate look for free stuff. So yes, the best feature for people trying out something is the fact, that you get full functionality for free.

Once you test TeamDrive you will most likely end up claiming security, versioning or WebDAV is the best feature.

I assume Dropbox woulnd't be where it is now if it wasn't free.  
(Version 0.6.567)

PERLMONKEY  I am not a fan of solutions that store my data anywhere outside my control, which is what Dropbox seems to do. There is an alternative called TeamDrive that can use any WebDAV space, does encrypting on a client level, offers clients for OS X, Win and Linux and - best of all - is free. Maybe if Dropbox doesn't suit you this is something you want to take a look at.  
(Version 0.6.567)

PERLMONKEY  WTF? Direct Download is more expensive than the boxed version?

Description says: "Buy VMWare Fusion for $79.99 (direct download) or from Amazon for $49.99 (boxed)."  
(Version 2.0.6b1)

PERLMONKEY  If you use Firefox and the add-on FireGPG this gets even easier.  
(Version 2.0.12)

PERLMONKEY  Sadly, I could not download iRun anymore and tried this software. It is free and therefore I shouldn't complain, but it's features are so limited (compared to others such as TrailRunner) and the interface is just so... Java, that I just can't stand using it for longer than a couple of minutes. However, I really like the icon :-)  
(Version 1.0)

PERLMONKEY  You may be right for some people, but if I decided to buy this app just to try it out I'd have to pay charges on my credit card for using outside the European Community. Even if they refunded me I'd be stuck with those charges and I really don't see any reason I should give this program a try when there is a chance I have to pay even the smallest fee (especially to my bloodsucking credit card company).  
(Version 1.5)

PERLMONKEY  When it comes to financial programs for the Mac there is either too many or too few applications to actually be considered. For Americans there are lots of really good programs, but what about people with a currency different from US Dollars or a native language apart from English? Well, this is where Moneydance is the one and only application that is actually worth looking at.

Of course, there is always GnuCash that can be installed using Fink and is run under Apple's X11, but if you're looking for something easy to use that will talk to you in German, French, Spanish or another language Moneydance is your best choice Period. And should you think: My, this is a Java app, it's got to be ugly and clunky, you're wrong! That's what I thought at first, but then I realized that MD is really fu working with (well, not as much fun as working with programs conforming with the interface guidelines, but almost). Plus the price is awesome: less than 30 Euros aren't very much.

Concerning the functionality: I am very sad Moneydance doesn't support HBCI (German banking standard), so you cannot do online banking with it with a German bank. Of course, if you need it there's always MacKonto or BankX, but they aren't as simple to use and full of functionality (plus there both much more expensive).

I do my banking via Safari and enter all my transactions into Moneydance. It's really the only acceptable financial solution for use on a Mac outside the English-speaking world.  
(Version 2006r2)

PERLMONKEY  I tried to set up an NFS server on 10.4 but somehow the usual way (i.e. /etc/exports) didn't do it so I decided to try out NFS Manager. It did a great job, I configured NFS for my Mac and haven't touched the app since then. It does one thing (and even for free if you just want to try it) and it does it well.  
(Version 2.8)

PERLMONKEY  It's a pretty decent intro to SQL. I have no idea why the stars on the left have to be there but apart from that it is a great tool to learn the structured query language SQL.  
(Version 1.0)

PERLMONKEY  I have tried out almost every email client for Mac OS X. After half a year with Opera's M2 client I decided to give Thunderbird a spin. After a couple of days I find TB to be ok, but not great.

First of all, the addressbook issue (which I am not going to waste another word on, see the other comments). Secondly, checking for mails seems somewhat slower than with Mail.app and M2. Sometimes, e.g. when saving a draft and then trying to cancel it, a dialog mentions the word "quit" which I think should be reserved for leaving the program, not for aborting some operation.

Overall (and I have more of those little annoyances) I find ThunderBird to be one of the acceptable email clients for Mac OS X. Unfortunately there is no real good client available that supports both POP3 and IMAP.

I tested Version 1.5 (20051201) on Mac OS X 10.4.3.  
(Version 1.5rc2)

PERLMONKEY  I purchased Yummy quite some time ago and did not regret it ever since. The interface is very clean, external editors are supported, connections are always stable for me (ftp and sftp) and the synchronizing features seem great (granted, I only tried them a couple of times out of curiosity).

So what made me choose this application over free alternatives such as Cyberduck? In short: The others crashed or didn't handle bookmarks as well as this client.

I guess Transmit, Fetch and CaptainFTP are equally good but I decide to stick with Yummy for a long time since the support is really great. I lost the password to one of my accounts and mailed the programmer who, upon receiving the bookmark file, recovered the password for me.  
(Version 1.1.5)