Windows has always been under curse of viruses and threats. If you have no knowledge of how to maintain it, then you must be noticing slow down of performance of your Windows machine after some time.
It all starts with list of startup programs that keeps on increasing with time. Or it may be some spyware, keylogger, virus, trojan that are not letting you to “work with performance”.
Below are some light weight and absolutely FREE softwares that will tweak your Windows machine for best performance and security.
I’ll keep on updating the list . If you find something missing or want to suggest some more good apps, then comment below or contact me. I’ll update the list.
Free Ram XP Pro
Freeware application to free and optimize your computer’s RAM (Random Access Memory), resulting in an increase in system performance and productivity. It automatically configures itself for ease of use and also features advanced options and customizability.
FreeRAM XP Pro has been designed to be easy to use yet highly customizable by computer novices and experts alike.
Avira AntiVir Personal
Avira AntiVir Personal - FREE Antivirus is a reliable free antivirus solution, that constantly and rapidly scans your computer for malicious programs such as viruses, Trojans, backdoor programs, hoaxes, worms, dialers etc.
Monitors every action executed by the user or the operating system and reacts promptly when a malicious program is detected.
Advance System Care
With more than 10,000 improvements, Advanced SystemCare Free v3 scans more, repairs more, cleans more, and optimizes more for your computer than ever before.
Advanced SystemCare Free v3. Advanced SystemCare Free (formerly Advanced WindowsCare Personal) has a one-click approach to helping protect, repair, clean, and optimize your PC.
With over 20,000,000 downloads since 2006, this fantastic, award-winning, free program is a must-have tool for your computer, 100% safe and clean with no adware, spyware, or viruses.
AVG Free Antivirus
It is one of the most downloaded antivirus software on the internet and protects your computer against latest viruses and spywares. It is compatible with Windows XP and Windows Vista.
Smart Defrag
Smart Defrag has the world’s fastest defragmenting engine. It’s been specially designed for modern, large hard drives, so it eliminates long waiting times.
Smart Defrag doesn’t just use simple defragmentation. It also streamlines your file system, places the frequently used files and directories into the fastest area of the disk, enabling your computer to run at top speed with the most stability.
Mz Registry Optimizer
Over time registry data becomes scattered within the registry file and when information is deleted from the registry holes are left which fragment the data within the registry.
Mz Registry Optimizer application was designed to optimize your registry by removing gaps and wasted space. This procedure, will reduce applications response time and registry access time.
CCleaner
CCleaner is a freeware system optimization, privacy and cleaning tool. It removes unused files from your system - allowing Windows to run faster and freeing up valuable hard disk space.
It also cleans traces of your online activities such as your Internet history. Additionally it contains a fully featured registry cleaner. But the best part is that it’s fast (normally taking less than a second to run) and contains NO Spyware or Adware.
FinitySoft Memory Manager
FinitySoft Memory Manager is a free memory management program designed for Windows 95/98/Me/NT/2000/XP/Vista. This is done by forcing Windows to remove all the data that is not currently needed from the memory. It can be used manually or automatically.Advantages are:
• Applications start faster
• Less blue screens
• Less lock-ups
• Allows your computer to run longer
Startup Manager
As the name suggest, Startup Manager is a program that provides you the possibility to manage the Windows startup procedure. It offers you the possibility to control which programs automatically start up and more.
Disk Cleaner
Disk Cleaner is a free open source tool to quickly and easily clean your hard disk from temporary files like those in the system temporary folder, the Internet Explorer Cache and Cookies folder, and the Recycle Bin. Disk Cleaner is absolutely free from adware and spyware.
SpeedItUp
SpeedItUp Free will speed up & enhance any computer system running Microsoft Windows Vista or XP. It works by using New 2007 Hard-Disk optimization technology that allows your computer to read data up to 300% faster from your Hard Drive.
SpeedItUp Free then optimizes your RAM and configures other settings to speed up your Internet connection and overall computer performance.
Black Coffee
Black Coffee is an application designed to aid system administrators and advanced users in modifying user and local administrator windows settings. These settings range from Internet Explorer to Disabling Windows Shutdown.
Black Coffee can only change settings if your on an administrator account, limited users will be unable to change settings, although they can view the settings.
Download (~175KB)
RemoveIt
Many spyware, adware and malware files attach themselves to vital Windows files. Because file size and signature of these files are not readable, RemoveIT Pro detects these kind of files and removes them to keep your computer safe.
RemoveIT Pro v4 utilizes High-level protection technology (HLP) and virus removal filter, which filters all new executable files in Windows Directory and it, keeps your computer clean from spywares, adwares, and worms up to 95% which other programs do not detect.
Microsoft Baseline Security Analyzer
Microsoft Baseline Security Analyzer (MBSA) is an easy-to-use tool that helps small and medium businesses determine their security state in accordance with Microsoft security recommendations and offers specific remediation guidance.
Improve your security management process by using MBSA to detect common security misconfigurations and missing security updates on your computer systems.
Mz CPU Accelerator
Mz CPU Accelerator is an application that automatically changes the priority of the foreground window, by allocating more CPU power to the currently active application (program-game).
Automatically de-allocates CPU priority when a new active application is selected. Also, new version contains an option that manages the cores of your processor! It works on any version of Windows.
This list will be updated on regular basis. If you have some more apps that you would like to suggest, comment here.


Hello! Nice list, but from my experience Freeram XP pro is useless, it can only slowdowns your machine, believe me. And I used AVG, but I think that AVAST is much much better.