Top anti-spyware software

Spybot – Search & Destroy was one of the first anti-spyware options available and it still is a fairly strong contender for finding threats. Other useful tools, including Secure Shredder, complement the program's basic functionality for completely destroying files. The interface is pretty dated, but with all the added extras of this 100 per cent free program, it's worth a look.

Ad-Aware Anniversary Edition has been in the anti-spyware game for a long time as well. They have always been close to the top of our list for anti-spyware detection, but you'll need to pay for added features like scheduling and shield-based protection. With several interface refinements, faster scanning times than previous versions, and numerous other enhancements, this might be the easiest-to-use Ad-Aware yet.

Spyware Terminator is a free option that offers an easy-to-understand interface and lets you schedule your scans for the time most convenient for you. The real-time protection for this program is stronger than most, but can get distracting as you'll need to personally approve many actions. Fortunately, you can designate a lower level of protection to keep you safe without all the hand-holding. This is one of our favourites for its relatively quick scan times, free real-time protection, and the ability to designate how deep of a scan you want to use.

CounterSpy makes it simple to schedule and customise spyware scans or run scans on demand, while also offering an adjustable level of real-time protection. Added features like a PC Explorer to browse running ActiveX controls and running processes are useful additions. This one offers a 15-day trial with which you'll be able to remove threats found by CounterSpy, but you'll need to pay to use this program regularly.

SuperAntiSpyware Free Edition, despite its rather unoriginal name, is a solid anti-spyware program. This program offers a number of options for the types of files you want scanned. Like many of the programs listed here, you'll need to pay for the full version of SuperAntiSpyware to unlock the ability to schedule your scans and use real-time protection.

Malwarebytes is the Editors' Choice at Download.com so we recommend it as one of your choices in your anti-spyware arsenal. Scans are quicker than other programs in this category, and Malwarebytes is often able to distinguish between real threats and common false positives. You'll also be able to scan individual files on demand and a handy File Assassin lets you delete locked malware files. You'll need to pay to set up regularly scheduled scans and real-time protection, but with this solid program, registering is worth your money.