We sometime want to avoid installing new software because its take some disk space along with memory. Uninstalling or removing a program not always help us to retrieve those worthy disk and memory space. That’s why we love portable software which easily stay on USB drive or any other portable device and we can use those software when we need without installing it.

Now try to retrieve those worthy space which eaten by useless files like cache files, tracking browser codes, temporary internet files, uninstalled program’s files, private sensitive files etc. You may be heard that we can restore our data even after deletion from ‘Recycle Bin’. So you need to use a method through which you can make those deleted files irretrievable. Here are some software which you can use for secure deletion purpose.

1. CCleaner Portable – Perhaps the best free cleaning tool. It can clean Recycle Bin, Recent Documents, Temporary files and Log files permanently. Also able cleans traces of your online activities such as your Internet history from all well known browsers. It also allows you to clean registry entries from old and unused entry. It backup your registry and allow you to roll back registry cleaning process if you accidentally delete any wrong registry entry. Additionally it allow you to clean unused files created by third party program like Media Player, eMule, Kazaa, Google Toolbar etc. Download CCleaner Portable.

2. Comodo System Cleaner Portable – Another worthy program which packed with registry, privacy and disk cleaning ability. It also comes with and autorun manager using which you can control which program should run on start up and which should not. Another interesting feature is scheduling delete. Sometime you can’t delete files as it locked by program; the scheduling feature allow you to delete those file when system restart next time. Additionally it also allow you to find duplicate files using its duplicate finder ability. Download Comodo System Cleaner Portable.

3. Portable CyberShredder – This program do nothing but delete a file securely. If you just want to delete a file in unrecoverable way then this program will be perfect for you. It just not delete the file but put random data on that disk cluster, so that cluster never able to return the file. This is one of the best software, you can use for secure deleting your confidential sensitive files. Download Portable CyberShredder.

4. Portable EasyCleaner – You can think it as a lite PC optimization tool. It allows you to find and delete duplicate files, invalid registry entries, invalid shortcuts, delete files, clean internet history etc. You can also use this program to control Windows start up program. Additionally it support several languages which make it popular on non-English users. Download Portable EasyCleaner.

5. Portable Drive Cleanup – As the name suggest this tool help you to clean your hard drive. It allows you to easily delete Windows temp file, delete backup and temporary files from user profiles. This also allows you search and destroy a specific file type. Like other clean up application it gives you ability to empty temporary internet files and Recycle Bin. This program first destroys the data of a file by feeling it by hex #00 and then delete them while you use Wipe Files feature. That means even the recoverable file won’t show actual data. Download Portable Drive Cleanup.

I really interested to know which free tool you use while you think about cleaning unnecessary things from your machine. Please share your view in comments.