SpyBot and Lavasoft!

What are those. I haven't heard of them. What is thier primary duty, like antivirus?

i have used spybot search and destroy and it's extremely good in removing spywares from the computer. i haven't used lavasoft. my vote goes to spybot since i am completely satisfied with its performance. this post reminds me that i need to install it again on my computer. i suspect that there is keylogger in my computer =(

I'm not even sure I know what those programs, spying program?