The best feature is that it can detect all kinds of malware, such as viruses, Trojans etc. It also has an option to delete them from your computer system completely. I don't like its UI interface very much because there are so many options which makes finding what you want difficult sometimes. In addition, some features may be confusing for new users who have never used this kind of software before. We use okdetect in our organization's network security department where we protect computers against malicious threats (viruses/Trojan horses).