Ad-Aware Free Antivirus+
Malwarebytes
Avira
Easy PC Optimizer
Microsoft Security Essentials
Advanced System Optimizer
CCleaner
Spybot - Search & Destroy
TechGenie Free PC Optimizer
Easy PC Optimizer
CCleaner
Norton PC Performance Optimization
Registry Reviver
Asmw PC-Optimizer pro
Advanced System Optimizer
Ashampoo WinOptimizer
Ad-Aware Free Antivirus+ TechGenie Free PC OptimizerMalwarebytes - Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .
Easy PC Optimizer - Easy PC Optimizer is an easy and quite simple tool for enhancing the performance and boosting up the speed of the system.
Avira - Cloud based email security solution
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Norton PC Performance Optimization - Norton PC Performance Optimization that is also called as Norton PC Optimizer is the PC speed enhancement tool by the Norton security system.
Microsoft Security Essentials - Microsoft Security Essentials is Microsoft's own foray into the world of virus protection.