Shadow Defender substitute?

I'm a long-time licensed user/fan of SD, on my desktop computer.

A pal just gave me an old laptop running XP. I mainly use it to surf the net. At $35, SD costs a bit more than I want to pay for use on this secondary box.

QUESTION: Is there any software that does about the same job as SD, but which costs less $$?

 

Toolwiz Time freeze or Toolwiz Time Machine come to mind, and they are both free.

http://www.toolwiz.com/en/toolwiz-time-machine/
http://www.toolwiz.com/products/toolwiz-time-freeze/

regards.

 

Shadow defender license is lifetime and unlimited pc's as far as I know

 

From the EULA:

"· Once registered, you are granted a non-exclusive license to use the Shadow Defender software for your own or your company products submissions on one computer at a time."

 

Thanks, I didn't know that