KEVINSMITH  I was using Synk Standard and recently updated to Synk Pro. The interface on both products is clear and has extensive options. I use it on my clients' servers and over the years I have built up confidence in the reliability of it's operations.

Recently I had a need to contact technical support. I got an email reply within a few hours. Problem solved.

Thanks for a great product and excellent support.  
(Version 6.4.4)

BACKPACKER  While testing Synk Standard and Pro on exact backups, neither current version seems to backup app-icons always. Synk Standard v6.4.1, however, did exact-backups with app-icons intact.  
(Version 6.4.2)

MATTLY  I want to like Synk, but after using it a bit, synkd, the helper process that manages automatic backups and this "zeroscan" thing that hooks into the Kernel knowing about file updates, is using 700MB of REAL MEMORY. This process is supposed to be resident ALL THE TIME. When the Synk.app process is running, between the two they're using over a gig of memory. That's just not acceptable.

Thanks, but I'll stick to SuperDuper, despite its problems.  
(Version 6.1.1)

FFASS  I never wanted to be a collector of backup programs but I that's what I've become -- I must have about 8 programs that I've tried or used over the years. Synk (standard, or middle, version) is finally what I've been seeking: an intuitive, stable, fast, easy-to-use backup program with a fantastic archiving feature. My prior program of choice was Tri-Backup 4, and that has a decent archiving feature and worked OK, though it seemed to not backup all of my updated data files, and it's not a Universal app (proud owner of a Mac Pro). The developers of Synk clearly put their minds and passion into this app and I think it shows: it looks great and functions great.  
(Version 6.0.2)

GPROVAN  I've tried many backup solutions over the years but Synk works very well.

There are many options to backups and synchronising which include giving you the option of saving changed files to a separate folder.

I synchronise about 15Gb of regularly changing work between 3 computers and this makes it a cinch. I've had no problems in the many weeks I've been using it.

The one thing that swung it for me was the support. The author runs a forum in which he tries to answer every query quickly and comprehensively. I've asked a few questions and have received answers the same day and to my satisfaction. You don't often get many authors actually caring about their customers.

The trial lasts 30 days and should be enough time to try it out. Once paid, you are eligible to any upgrade in the next 12 months for free.

What more could you want?  
(Version 5.2.3)

D20BOOKS  Wow. I've been looking for a really good backup and file synchronization application for a good while. I've tested just about everything on MacUpdate.com and Synk was by far the best of the bunch.

Not only will it do a quick sync between folders (even over the network), but it has the added features of scheduled functions. This will allow me to simply set it up and forget about it, with confidence that things will be synk'ed.

Lastly, the interface is very easy to understand and use.

Synk got my $20 and I'm very happy.  
(Version 5.2.2)

DOC8  I have used Synk to back up my file servers since version 3. I have found it fast, extremely reliable, and easy to set up and upgrade. It is a "fire and forget" app that does my periodic and nightly backups and one I prefer to Time Machine (probably because all my data lives on my servers rather than my hard drives).  
(Version 6.4.2)

ME2  Been using Synk for years...developer is very open to suggestions and responds to queries fast. This Pro edition is a real 'machine' and does a superb job of backing up to multiple areas while you sit back and relax knowing the job is done.  
(Version 6.1.1)

MADMACMAD  forget the rest .... this is the best!!!!!  
(Version 6.1.1)

ESQUARE  Warning for users of 5.x version: the standard version of Synk 6 doesn't provide alias resolving and is, in this respect, actually a downgrade.   
(Version 6.0)