I'm currently using Avira and Malwarebytes' Anti-Malware (MBAM) as my two weekly on-demand scanners (which by the way have never found anything in the history of my system, probably reflecting that I practically don't really need any on-demand scanners). I've also tried SUPERAntiSpyware (SAS) which is rather excellent too. I'm just wondering what the Wilders community can suggest with regards to other good on-demand scanners. Here are my general criteria: 1. Program must be able to be installed as "on-demand" only with no "real-time" component. 2. Scanning speed must be fast (MBAM, Avira, SAS are all examples of having fast scanners). 3. Ideally freeware, but suggestions for paid software are also welcome. Thank you all!