What always every one want is to maintain their System smoothly and speedily.
I'll discusses here the tools needed for a perfectly running Windows system.
Some of these tools may freeware and some are shareware or licensed tools.
But all these tools have high performance and power to keep windows error free.
my first choice is Regcure.It scans the whole registry and shows all errors.
You also has the option to view all start-up items of the computer and stop unneccesary items. I'm using it for a long time and is the best registry cleaner.
Regcure finds all junky items, which keeps intact by other tools such as norton,pc on point, and reg mechanic.
"RegCure™ provides fast and efficient scanning and cleaning of your registry so that your computer can run at an optimal level of performance. RegCure identifies invalid registry items and decides what items you want to remove. After removing registry entries, you have the option to restore your computer to a previous state."
Download "regcure" here
2. Trojan Remover
It also based on registry and scans all critical places for trojans and malwares.
Trojan Remover can detect some viruses left by popular virus scanners.
TR is designed specifically to disable/remove Malware without the user having to manually edit system files or the Registry. The program also removes the additional system modifications some Malware carries out which are ignored by standard antivirus and trojan scanners.
Trojan Remover scans ALL the files loaded at boot time for Adware, Spyware, Remote Access Trojans, Internet Worms and other malware. Trojan Remover also checks to see if Windows loads Files/Services which are hidden by Rootkit techniques and warns you if it finds any.
Download Trojan remover
Registry optimizer and removes unnessary files from system.
CCleaner scans all places for unnecessary files .
It has the ability to detect errors of the registry and scan the computer for unnessary files.
also to view startup objects and stop them.
It's uninstaller is a worthy tool which shows items that does not removed by 'add or remove' program
Download 'CCleaner" here
My another favorite is 'SpyBot Search and Destroy'.
Once my system infected with the trojan called 'Virtumonde', I take up with all popular virus scanners like Kaspersky and PC tools to remove virtumonde. None of them was able to remove Virtumonde but Spybot did it superbly.
Spy bot is an uncomparrable tool to remove
all malware, adware and also it removes viruses.
You can detect and remove some threats which does not remove by some giant virus scanners such as kaspersky.
It also featured with a file shredder and other useful tools.
Download "spybot" here
5.Power Quest Partition Magic.
You don't need any other tool to manupulate your disks and partiotions, if you have Partiotion Magic software.you can quickly and easily create partitions, which act as "file drawers," on your hard disks for storing valuable information such as data files, applications, and operating systems.
Storing information in separate partitions helps you organize and protect your data, safely run multiple operating systems, and reclaim wasted disk space.
PartitionMagic enables you to secure your data by physically separating it from other files. Separate partitions also make backups to networks and removable drives easy.
You also able to create rescue disks with PM.
Download : Partiotion Magic
(power quest partition magic no longer exists, It's acquired by Norton, But you can downlad power quest from other sources. Just google it !)