Antivirus:

 

• Windows Defender in Windows 8, 8.1, or 10

• Bitdefender Antivirus Free in Windows 7

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Extra Malware/Virus Protection:

 

• Malwarebytes Antimalware (Premium edition)

 

Local Backup:

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• Backup and Restore (Windows 7), even in Windows 10.

• Don't suggest using the new File History feature in Windows 10.

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Online Backup:

 

• IDrive

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Browser:

 

• Google Chrome

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Cleanup Tool:

 

• Glary Utilities (Free Edition - Use only 1-Click Maintenance)

 

AD Blocker:

 

• ADBlock Plus