Pros: It worked....sometimes....for small files and folders... The mail-in rebate came in ok.

Cons: We set it to back up a 300 GB share on a Windows 2003 server. It would hang or crash every time it got to ~67% complete, on a different file each time.

Overall Review: Now, switching to one of their competitors.

Pros: NTI Shadow works pretty well. I've been using it to backup pictures, music, etc. to an external hard drive and a flash drive. It runs in the background and once you permanently assign a drive letter to a the external drives, it syncs automatically which is convenient. I got this for free with a mail-in rebate, which should be coming back soon.

Cons: The other program that comes with this is NTI Ninja which is really problematic. It can create an encrypted drive (such as a thumb drive) which is supposed to be portable. I tried it out for a while and it worked alright for my laptop but when I tried moving the external drive to a different computer problems came up. I decided to use a different encrypting program and tried formatting the drive. This caused more problems and my drive almost became nonfunctional. Would not recommend the Ninja program, use TrueCrypt or something else.

Overall Review: Not bad for the price (free). If you want to use this for backup, as I said earlier, use the logical disc manager inside windows to permanently assign your external hard drive letter (R,S,T work pretty good).

Pros: A friend recommended this product to me. It is simple to set up and use. I really like that my photos are just copied to my portable hard drive as files so I can access them without needing to open the program. Knowing that my photos are safe is a great feeling.

Cons: Some advanced features (versioning & filtering) were a little too techie for me but reading the help file expained them to me and I found they were not what I needed.

Overall Review: The continuous feature is pretty cool.

Pros: none-save your money_do not be lulled by free rebate!!!!

Cons: tech support took almost a week to contact me after 3 messages NO TOLL FREE TELEPHONE # even after several installations on my vista system it would not install tech support polite but useless crashed my system worst of all-it would not uninstall even after 10 days with tech support on my dime it still doesn't work and they have not offered to refund money but will create "debugger"-not completed yet!!! JUNK!!! my first purchase from NewEgg that fI regret

Pros: Had trouble with NTI Shadow 3, eventually got the company to refund.

Cons: Spent too much time trying to resolve problems, tried on three computers, eventually gave up on it. Reluctant to go through that again with trying v.4.

Overall Review: I found an alternative, called Second Copy, that works great on every machine. Have installed for many customers.

Pros: Absolutely None...there should be a negative rating to select.

Cons: Cannot get this Software to work no matter what I try. I am using Windows 7 Pro 64 bit and I cannot get it to work using ANY compatability mode. I installed NTI Shadow 4 and set it up. When I tried to run it it got to about 5% progress and then I got this error: "Microsoft Visual C++ Runtime Library Runtime Error! Program: C:\Prog... This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information." I found an update on NTI's web site and downloaded it. When I try to install the update it will not install. It gets to a point in the installation saying "Preparing to remove older versions of this application", and prompting me to respond "Yes" or "No". If I select "Yes" I get the message "Another installation is in progress. You must complete that installation before continuing this one", and in a separate window another message says "Error reading setup initialization file".

Overall Review: When you install this program it automatically installs NTI Ninja too which is software that maximizes data protection by using a driver level encryption technology to create private and public partitions on USB storage devices. Ninja allows you to easily access and share commonly used data on the public partition, while simultaneously restrict and hide access to confidential data on the private partition of your drive. I suspect that this Ninja software might be part of the problem, I'm not positive though. It looks like it would be a good program if you can get it to work. I don't think Tech Support even exists. It's been at least a week since I e-mailed Tech Support and have had no response at all. Does anyone ever test anything before they put it on the market? Jeeeezzzzz!

Pros: Works as advertised. It install without a problem and I found the setup simple to use. The feature I appreciate the most is the "real-time" backups (i.e., backups can be kept as you make changes to the document). I have NTI Shadow setup to keep the two previous versions of a document and I have restored several documents from backups after I accidentally saved instead of giving the save a new name. I have Shadow doing these backups to another hard drive in my machine and a network drive on another computer.

Cons: None noticed.

Overall Review: I have not had the need to contact technical support as another review indicates, so I cannot comment on the technical support. However, Shadow has performed flawlessly over the two months that I have used it.

Pros: Does exactly what it claims to do. (a rarity in software these days)

Cons: I had version 3.7, which actually worked a bit smoother and faster, so after paying for an "upgrade" I reverted back. That is OK. I didn't need the extra "synchronize" feature of version 4, and didn't like the user interface as well.

Overall Review: I used version 3.7 for about 2 years and love it. I would accept version 4 if I wasn't already more familiar with version 3.7. It is good software that works as advertized under VISTA.