Which is the best free anti spyware app?

[Ramakrishnan]

I have found ad_aware pe to be best. I have found spyware on my pc even though it is not connected to internet.

 

[janitha]

I bought Lavasoft Ad-Aware SE Professional and it is a classy software. I love it! Thanks for all the help, guys!

Pl let me know how you bought it. I often wonder how to buy such SW which are not freely available in the market. And though I do buy through net banking, I have not done so from overseas.

 

[aryayush]

Well, I have this brother who just buys whatever software I need. I never bothered to ask him where he gets it from. I just know it is quite legal.
He is a software engineer in some firm in Kolkata.