Advanced Encryption Plug-In Pro for Windows Explorer
AEPE lets you encrypt files using 17 encryption algorithms and also shred/make encrypted . exe files and work with . ZIP files from context menu of Windows Explorer! Encrypting files with using strong encryption algorithms: Advanced Encryption Standard (Rijndael), Blowfish, DES, CAST, RC2,... Shredding (Safe removing files from your system). ... Ability to browse contents and extract it from ZIP archives. ... And do not worry - you will be always able to restore original files with using your password.
http://www.secureaction.com/ae_plugin_pro/download/ae_plugin_pro.exe - 879Kb - Download - Screenshot

Blancco - File Shredder
Blancco - File Shredder is the secure solution for your day-to-day wiping of files and folders When you delete a file, empty the Recycle Bin or even format your hard drive, the information is NOT removed from your computer. Your data can be easily restored by anyone. ... You may also shred all your temporary files and old deleted data by selecting those options in the program window. ... Choose to shred everything in your recycle bin with an easy click. ... The software includes a qualitative reporting function.
http://www.blancco.com/main.site?action=siteupdate/view&id=23 - 7Mb - Download

PCMesh Internet Cleanup
PCMesh Internet Cleanup is a utility to remove user activity tracks and to clean the hard disk from junk files. Windows logs user activity in several locations of which the most important ones are: - index. dat files which log user's Internet activity such as the addresses of visited websites, a... Users can use file shredding to destroy their sensitive files securely. ... Another security functionality contained is files shredding which means to overwrite files a number of times and finally delete them.
http://www.pcmesh.com/pictrial.exe - 1Mb - Download - Screenshot

Wipe It
Sanitize your hard drive, flash drive, zip drive and more... Don't let your important data fall into the wrong hands. Many make the mistake of just deleting files. Others shred their files, but is that really good enough? The answer is no! You must sanitize your drives about once a month to... Shredding a file is just not enough - you need to sanitize the drive to remove remnants of deleted files. ... Wipe It is free to download and try for 90 days, so there's not excuse. ... Do it now before it's too late.
http://www.skylarkutilities.com/download/wipe-it.zip - 234Kb - Download - Screenshot

Optimize Computer
Keep your PC running faster, cleaner, and error free with Optimize Computer! This award wining application is a suite of 7 powerful tools designed to increase the performance of your computer, by correcting problems, cleaning and fixing Windows registry, deleting unnecessary files, fine-tuning... Optimize Computer is the ultimate solution for keeping your computer running like new. ... This utility monitors your PC and fixes problems, giving you a smarter, better and faster computing experience.
http://www.amicutilities.com/download/OptimizeComputerSetup.exe - 2Mb - Download - Screenshot

SafeIT Desktop Security Suite
Buy SafeIT Desktop Security Suite and get both SafeIT File Encryption and SafeIT File Shredding in one powerful suite. Certified and awarded software suitable for both the enterprise and private user. Encrypt sensitive documents and other private digital information you have on your computer. ... File shredding utilizes an advanced algorithm technique of overwriting your files multiple times so that the information contained in them is no longer readable, thus destroying the original data forever.
http://www.safeit.com/downloads/SafeITDesktop.exe - 9Mb - Download - Screenshot

ShredIt for Windows
Files can be recovered from your computer's recycle bin. Protect your privacy with this easy to use file shredder that shreds data so it can't be recovered. Whether you want to erase a hard drive or wipe a file, ShredIt for Windows is the computer privacy software for the job. ... It comes with step-by-step instructions, built in safety features, government standards compliance and a configurable overwrite pattern. ... It shreds files, folders, disk free space, hard drives and external hard drives.
ftp://ftp.mireth.com/shreditpc.zip - 728Kb - Download - Screenshot

CleanMantra
PCMantra's CleanMantra shreds files which compromise privacy, cleans all traces of Online Activities as well as Offline Activities through effortless, secured, user-friendly options. Increases efficiency of PC by permanently cleaning useless files through Shred Function. ... Large number of dangerous programs initiates at the windows startup, transmitting your personal information to the clandestine servers and creating Pop up advertisements. ... With the help of this information, your offline as well as online activities can be traced.
http://www.pcmantra.com/cleanmantra_trial.exe - 656Kb - Download - Screenshot

ShredIt X
How secure is your trash? Files can be recovered from your computer's trash. Protect your privacy with this easy to use file shredder that shreds data so it can't be recovered. Whether you want to erase a hard drive or wipe a file, ShredIt for Mac OS X is the computer privacy software for the job. ... It shreds files, folders, disk free space, hard drives, and external hard drives. ... It comes with step-by-step instructions, built in safety features, government standards compliance and a configurable overwrite pattern.
ftp://ftp.mireth.com/shreditx.dmg.zip - 3Mb - Download - Screenshot

Deletor
Deletor helps you keep your disks clean by deleting or shredding files corresponding to file name patterns or extensions that you specify. Deletor also has support for filter packs, which allow you to store sets of your most commonly used file deletion specifications. ... Combine this with file date filtering and command line access to the program, and you can easily automate the cleaning process with batch files, shortcuts, or a scheduler.
http://www.basta.com/Software/SetupDeletor.exe - 459Kb - Download - Screenshot