Spybot is a free anti-spyware software that is designed to protect your privacy and secure your system from various types of malware. It features a range of tools that allow you to detect and remove spyware, adware, tracking software, keyloggers, and other unwanted software from your system.

One of the key features of Spybot is its Immunization tool, which proactively protects your system against malware attacks by blocking access to sites known to contain malicious or unwanted software. It also blocks tracking cookies and browser plugins that are known to contain malware, and supports popular browsers such as Internet Explorer, Opera, Firefox, and Chrome.

Another useful feature of Spybot is its Startup Tools, which allow you to manage what happens and what gets loaded at system startup. This powerful tool allows you to inspect and change the behaviour of what is loaded, and can be useful if you suspect that changes may have been made to your system without your knowledge.

In addition, Spybot includes a Rootkit Scan that is specifically designed to locate rootkits, which are technologies used to hide themselves and their actions from users and other system processes. This scan includes checks of the file system, the registry, and some process-related lists.

Overall, Spybot is a comprehensive and effective anti-spyware software that offers a range of tools to help protect your privacy and secure your system against various types of malware. It is easy to use and offers a high level of protection, making it a great choice for anyone looking to safeguard their system from spyware and other unwanted software.