360Amigo System Speedup
Publisher's description: "Think your PC is slow? 360Amigo System Speedup can quickly identify and fix a wide range of errors and speeds up your slow PC. 360Amigo System Speedup detects and removes all unused files in your PC from faulty software installs/ uninstalls, it optimizes your Windows for faster start-up times and stops malicious processes from running on your PC. It also cleans traces of your online activities such as your Internet history, cookies, temporary files, logs, invalid links and much more. But the best part is that it’s small, fast and furious (normally taking less than a minute to run). 360Amigo System Speedup will get the most out of your PC and make it like new again. Both beginners and experienced users will enjoy the available features and options."

http://www.360amigo.com/
Advanced SystemCare
Publisher's description: "A simple registry cleaner cannot give you true performance boost. Advanced SysteCare Free 4 combines Registry clean, defrag, system tune-up, shortcut fix, privacy sweep, junk files clean, disk fix and optimization, and more, to guarantee your PC run like a new one."

http://www.iobit.com/advancedsystemcareper.html
Aida32
Publisher's description: "AIDA32 is a professional system information, diagnostics and benchmarking program running on Win32 platforms. It extracts details of all components of the PC. It can display information on the screen, print it, or save it to file in various formats like HTML, CSV or XML. For corporate users, AIDA32 offers command-line switches, network audit and audit statistics, remote system information and network management."

http://www.aida64.com/
CCleaner
Publisher's description: "CCleaner is our 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!"

http://www.piriform.com/CCLEANER
Disk Wipe
This is a portable program, i. e. it runs directly off the .exe file. The program can therefore quite easily be saved onto a portable medium, like a USB flash drive, hence the name. The program claims to be able to ensure "impossibilty of retrieval from" any storage device, even USB memory sticks and SD cards. It uses some of the more well known methods like Gutmann, 5220-22M and supports Windows file systems.

http://www.diskwipe.org/
EASEUS Partition Master Home Edition
Publisher's description: "Free partition manager for Windows 32 bit & 64 bit HOME USERS. No Adware and Toolbar. Safely free merge adjacent partitions into one without data loss. Upgrade system disk to a bigger one with one click. Extend system partition to maximize computer performance. Partition Manager utility for better hard disk management and computer performance maximization. Copy Wizard to copy partition or migrate entire hard disk to another without Windows system reinstallation."

www.partition-tool.com/
Eraser
Publisher's description: "Eraser is an advanced security tool for Windows which allows you to completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns."

http://eraser.heidi.ie/
File Shredder
Publisher's description: "File Shredder is simple but powerful program that surpasses manu commercial file shredders out there. The Author believes that such a utility should be available to anyone for free and that permanent and safe removal of confidential documents is a matter of basic right to privacy. In File Shredder you can choose between 5 different shredding algorithms, each one gradually stronger than the previous one. It also has integrated Disk Wiper which uses shredding algorithm to wipe unused disk space."

FIle Shredder - Free application to permanently shred files on your computer.
Glary Utilities
Publisher's description: "Glary Utilities is a freeware with registry and disk cleaning, privacy protection, performance accelerator and amazing multifunctional tools. It can fix dogged registry errors, wipe off clutters, optimize internet speed, safeguard confidential files and maintain maximum performance. It is designed for both novice and professionals. User-friendly interface shows clear & detailed directions. For novice, all work can be done with just 1 or 2 clicks, while for professionals, abundant options are available."

http://www.glaryutilities.com/
Iobit Uninstaller
Publisher's description: "IObit Uninstaller helps you uninstall and remove unwanted programs and folders from your computer fast and easily. Where the built-in and sluggish "Windows Add or Remove Programs" option fails, IObit Uninstaller works as always and picks up the slack. What's better, it is a free Uninstaller without installation."

http://www.iobit.com/advanceduninstaller.html
KillDisk
Publisher's description: "Erases all data on hard and USB drives completely. Supports 17 security standards DoD 5220.22-M. Wipes out all unused space on existing drives, not touching existing data."

http://www.killdisk.com/
MiniTool Partition Wizard Home Edition
Publisher's description: "MiniTool Partition Wizard Home Edition is a free partition manager software designed by MiniTool Solution Ltd. Our partition manager supports 32/64 bit Windows Operating System including Windows XP, Vista and Windows 7. Home users can perform complicated partition operations by using this powerful yet free partition manager to manage their hard disk. Functions include: Resizing partitions, Copying partitions, Create partition, Delete partition, Format partition, Convert partition, Explore partition, Hide partition, Change drive letter, Set active partition, Partition Recovery."

http://www.partitionwizard.com/free-partition-manager.html
Pandora
Publisher's description: "Pandora Recovery allows you to find and recover recoverable deleted files from NTFS and FAT-formatted volumes, regardless of their type - you can recover pictures, songs, movies or documents. Pandora Recovery will scan your hard drive and build an index of existing and deleted files and directories (folders) on any logical drive of your computer with supported file format. Once the scanning is complete you have full control over which files to recover and what destination to recover them to. You can BROWSE the hierarchy of existing and deleted files, or you can use SEARCH functionality to find a deleted file if you remember at least one of the following: - full or partial file name, - file size, - file creation date, or - file last accessed date. On top of that, Pandora Recovery allows you to preview deleted files of certain type (images and text files) without performing recovery. This feature becomes really important if you are forced to recover deleted files to the same drive. Currently you can preview files having several image file types (BMP, GIF, JPG, PNG, ICO,TIF, TGA, PCX, WBMP, WMF, JP2, J2K, JBG, JPC, PGX, PNM, RAS, CUR) and several text file types (TXT, LOG, INI, BAT, RTF, XML, CSS). Quick Viewer allows you preview file contents as text if it cannot find appropriate viewer for it. To use quick viewer you can select deleted file and or click the Quick Viewer icon or right click on deleted file and select 'Quick View'. Quick View will then display a preview of deleted file."

http://www.pandorarecovery.com/
PC Brother System Care Free
Publisher's description: " Scanning and configuring system parameters intellective., Auto detect system and list need-to-be-optimized items., One-click to optimize system and network, One-click to clean redundant data.,Multiple Utilities, Clean invalid registry keys and data., List all installed software's information for users to manage., Offer new software to download., Detect system security from antivirus, firewall, system updates and shared resource., Speed up system by adjusting "Processes", "Startup" and "Service"., Manage networks and make it more effectively., Detect current usage of CPU, memory and page file and help users free memory., Clean disk to save more space and speedup system., Repair faults from IE and system., Clean temporary files, cookies, history and plug-ins and keep web-surfing secure., Keep web-surfing secure."

http://www.pc-brother.com/index.php/product/free
PCWizard
Publisher's description: "PC WIZARD is a powerful utility designed especially for detection of hardware, but also some more analysis. It's able to identify a large scale of system components and supports the latest technologies and standards. This tool is periodically updated (usually once per month) in order to provide most accurate results. PC WIZARD is also an utility designed to analyze and benchmark your computer system. It can analyze and benchmark many kinds of hardware, such as CPU performance, Cache performance, RAM performance, Hard Disk performance, CD/DVD-ROM performance, Removable/FLASH Media performance, Video performance, MP3 compression performance."

http://www.cpuid.com/softwares/pc-wizard.html
Process Explorer
Publisher's description: "Ever wondered which program has a particular file or directory open? Now you can find out. Process Explorer shows you information about which handles and DLLs processes have opened or loaded. The Process Explorer display consists of two sub-windows. The top window always shows a list of the currently active processes, including the names of their owning accounts, whereas the information displayed in the bottom window depends on the mode that Process Explorer is in: if it is in handle mode you'll see the handles that the process selected in the top window has opened; if Process Explorer is in DLL mode you'll see the DLLs and memory-mapped files that the process has loaded. Process Explorer also has a powerful search capability that will quickly show you which processes have particular handles opened or DLLs loaded. The unique capabilities of Process Explorer make it useful for tracking down DLL-version problems or handle leaks, and provide insight into the way Windows and applications work."

http://technet.microsoft.com/en-us/sysinternals/bb896653
Revo Uninstaller
Publisher's description: "Revo Uninstaller is a freeware innovative uninstall utility much faster than Windows Add/Remove applet. With its advanced and fast algorithm, Revo Uninstaller scans before and after you uninstall an application. After the program's regular uninstaller runs, you can remove additional unnecessary files, folders and registry keys that are usually left over on your computer. Even if you have a broken installation, Revo Uninstaller scans for an application's data on your hard disk drives and in the Windows registry and shows all found files, folders and registry items so you can delete them."

http://www.revouninstaller.com/revo_uninstaller_free_download.html
Slim Computer
Publisher's description: "SlimComputer removes trialware, adware, toolbars, unwanted start-up entries and other unnecessary items from a PC. SlimComputer uses cloud technology and community feedback to provide recommendations about which programs on a PC are unneeded. Using real-time scanning and a live stream to a community-sourced data cloud, SlimComputer evaluates items on a PC and offers customized recommendations to improve PC performance. With one click of the run scan button in the SlimComputer main window, consumers receive information about which software, start-up items and toolbars are considered optional on their PC. The interactive assessments from the SlimComputer, user-based community provide information about the function and usefulness of each item on an invidual PC. Users can receive and make recommendations about various pieces of software and rate applications all within the SlimComputer program. This community-based feedback and social infrastructure system separates SlimComputer from other PC cleaning and utility programs. User ratings make up a network of community-sourced data. Every minute, that community-sourced data is fed into a dynamic data-cloud. Every new toolbar, promotion, proprietary service even spyware and adware is catalogued instantly. As soon as the computing community knows about something, SlimComputer knows about it and establishes a profile for it. By accessing this contributivee cloud at all times, SlimComputer creates a customized cleaning profile for any given computer. In addition, SlimComputer provides a single dashboard for access to powerful built-in Windows tools, and can restore disabled start-ups, toolbars and short-cuts with one click. With its community-based feedback about applications and their usefulness, SlimComputer is an indispensable program for improving overall operating system performance and start-up speed."

http://slimcomputer.com/
Smart Defrag
Publisher's description: "It is known that disk fragment has been a primary cause of slow and unstable PC performance. Smart Defrag 2 is such a FREE tool that provides extremely fast and efficient defragmentation to your hard drives intelligently for faster file loading and high disk performance. With "install it and forget it" feature, Smart Defrag 2 works automatically and quietly in the background on your PC, keeping your hard disk running at its top speed. This powerful, award-winning free defragmenter is 100% safe and clean with no adware, spyware, or viruses."

http://www.iobit.com/iobitsmartdefrag.html
TweakNow PowerPack
Publisher's description: "TweakNow PowerPack is a fully-integrated suite of utilities that let you fine-tune every aspect of your computer's operating system and Web browser. The Registry Cleaner module provides you with a safe and simple way to clean Windows Registry. To keep your computer always at top performance, we recommend to clean your registry at least once a month. For Windows tweaking lovers, the suite provides more than 100 hidden Windows settings in the Windows Secret section. Using modules included in this section, you can easily customize your Windows like geeks do. The Virtual Desktop module lets you run as many as four custom-designed desktop configurations simultaneously, allowing you to tailor your computer screen to your mood and your work requirements. Last but not least, the suite also gives you a complete picture of all aspects of your computer's hardware, including detailed information about your motherboard, processor, video card, memory, hard disk and network."

http://www.tweaknow.com/
Wipe
Publisher's description: "Wipe is an easy tool to clear user browsing history, clean index.dat files, remove cookies, cache, temporary internet files, search history and any other tracks. Contains fantastic preview list and lets you review tracks before removal. Anti recovery methods supported."

http://privacyroot.com/programs/info/english/wipe.html
Wise Disk Cleaner
Publisher's description: "Wise Disk Cleaner is a free disk utility designed to help you keep your disk clean by deleting any unnecessary files. Usually, these unnecessary, or junk files appear as a result of program's incomplete uninstalls, or Temporary Internet Files. It is best if these files are wiped out from time to time, since they may, at some point, use a considerable amount of space on your drives. Wise Disk Cleaner, with its intuitive and easy to use interface, helps you quickly wipe out all the junk files. Using the program is indeed easy. It also works fast when both scanning for files and deleting files."

http://www.wisecleaner.com/download.html
Wise Registry Cleaner
Publisher's description: "Over time and registry junked-up, computer becomes slower and slower. Wise Registry Cleaner freebie does a neat job in cleaning out the Registry junk. It scans the Registry, flagging orphaned or bad Registry entries, and shows you the name and values for each. It identifies Registry entries that may be dangerous to delete, and those that are safe to delete, so you can distinguish between the two. It also lets you decide which entries to delete, and which to keep. For safety's sake, it can also back up your Registry before scanning, so that you can restore it, if the program causes any problems."

http://www.wisecleaner.com/
ZSoft Uninstaller
Publisher's description: "ZSoft Uninstaller is the better and easier way to uninstall programs on your computer. ZSoft Uninstaller can be used as a Add/Remove applet replacement, but not only that, it can also e.g. analyze an installation so it can be completely uninstalled (also supports reboots of the computer as the process is split into two: Before and after the installation), find uninstall-leftovers, cleanup in the programs starting with your computer at startup, find and delete temporary files, find and delete empty folders, delete entry's from programs that is no longer installed, hide Windows Updates, hide entries from the list that you are never going to uninstall (drivers etc.) making the list smaller and therefore easier to manage, show more information than available though add/remove, automatically find entry's from programs that are most likely already uninstalled, automatically find entry's that are considered "crap-ware" & (off course) search the list of installed software."

http://www.zsoft.dk/