Sophos Anti-Rootkit

What is a rootkit? The term rootkit is used to define a Trojan (or technology) used to hide the presence of a malicious object (process, file, registry key, network port) from the computer user or administrator. Sophos Anti-Rootkit helps to eliminate hidden applications and processes. Removing rootkits without compromising system integrity is particularly challenging and needs to be done with care. Our free software, Sophos Anti-Rootkit, finds and removes any rootkit that is hidden on your computer.

http://www.sophos.com

Pdf24

Create PDF-documents from any application, provided the option 'print' is available. Pdf24 installs a printer of its own with the name 'pdf24'. You can use this printer in Windows just like any other printer. After you have printed a document on pdf24 a PDF-file is automatically created.

http://pdf24.org/page/en-description.html