PC Tools Internet Security is described as 'combines the award-winning security technologies from PC Tools, including Spyware Doctor AntiSpyware, AntiVirus, Firewall Plu and Spam protection, to provide complete integrated protection for your PC' and is an app in the Security & Privacy category. There are more than 10 alternatives to PC Tools Internet Security for Windows, Mac and Linux. The best alternative is ESET NOD32 Antivirus. It's not free, so if you're looking for a free alternative, you could try Comodo Internet Security. Other great apps like PC Tools Internet Security are Kaspersky Internet Security (Paid), AVG Internet Security (Paid), F-Secure Internet Security (Paid) and ZoneAlarm Internet Security Suite (Paid).