File Compression: 7-Zip

Do you want to make a file smaller in size?
Do you want to get more space in your pen drive?
Do you want to make your files safe from virus infections?

You absolutely needed a ZIP utility to work online. My recommendation is 7-Zip, which is an open source ZIP utility software. Most of the source code is under the GNU LGPL license. You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip - It's free!

http://www.7-zip.org/

Why I did not recommend WinZip and WinRAR? Well, although both of them are popular, they're actually a shareware, which means you need to BUY it, unless you've got some money to buy the software, or got some better alternatives...

Also, other reasons why I recommend this software...

• It could compress files into a .7z (by default) or .zip format file.
• .7z files are rare, and it would get rare chances for viruses to infect the file.
• Could decompress ISO, LZH, LZMA, MSI, RAR, RPM, UDF, etc...
• Integrate into right-click menu for quick archiving/de-archiving.