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December 11, 2007 3:07 PM PST

Killer Download: Top file compression alternatives

by Jason Parker
  • 20 comments
Killer Download (Credit: CNET Networks)

Every computer user needs a solid file compression program. Not only are they mandatory for opening downloaded software, they offer several other useful features for tasks like creating e-mail attachments, performing backups, and saving space on your hard drive. Most people use WinZip because it comes pre-installed on a lot of Windows PCs, but WinZip isn't the only program available for file compression.

There's certainly nothing wrong with WinZip, but some programs offer better file compression or features that may be more in tune with what you need. For instance, some apps make efficient compression their focus, while others concentrate on the strongest encryption to keep your files safe. If you're looking for an alternative to WinZip, here are some programs I recommend.

WinRAR

Big buttons and an intuitive interface make this popular utility easy to navigate.

(Credit: CNET Networks)

WinRAR is a popular choice for file compression for good reason: It's a great program. This shareware app ($29) using the RAR format (with support for several others) boasts the ability to compress your archives at rates 8 percent to 15 percent better than regular ZIP files. As an old standby in the file compression category, WinRAR offers a polished interface and easy-to-understand wizards that help you create manageable e-mail attachments, quick document backups, and encrypted archives. It's the only shareware program in this group of apps, but it is well worth the price. You'll be able to access most features without registration.

7-Zip

Though not as pretty, 7-Zip has plenty of power under the hood.

(Credit: CNET Networks)

7-Zip is a free alternative that is not as pretty as WinRAR or WinZip, but like WinRAR, offers its own highly efficient 7z compression method (they claim compression rates 2 percent to 8 percent better than regular ZIP files, but in our tests it was much better) so your backup archives take up less space. You'll be able to create self-extracting archives as well as provide password protection for added security. 7-Zip doesn't offer the polish and ease of use found in the paid apps, but it easily makes up for it with functionality.






PeaZip

This quick to compress alternative works as great as it looks.

(Credit: CNET Networks)

PeaZip is a newer discovery for me, but I definitely like what I see so far. This open-source (free) compression program supports a huge list of formats and is incredibly easy to use with a well-designed and skinnable interface. A solid file browser with search and history features makes finding your archives easy, and PeaZip can handle multiple archives simultaneously. Complete with a number of different solid encryption methods, PeaZip is a great choice for anyone looking for a flexible WinZip alternative.

More than just the key to opening downloads, file compression utilities have a lot of uses. Choose one of these alternatives if you want something other than what's preloaded on your hard drive. As always, let me know if you use something better so I can check it out!

August 3, 2007 2:19 PM PDT

Power Downloader sends secure zipped files

by Jason Parker
  • 3 comments
Power Downloader (Credit: CNET Networks)

After a tip came through the wire that Phillipe the Phisher was vacationing in Paris, Power Downloader asked his friend Francois Foto if he might be able to snap some undercover pictures of the information pilfering villain. A week later, Power received an e-mail from Foto saying that he got the shots Power requested, but that he wondered how he could safely send the images without them being stolen in transit. Also, the image files take up a lot of space, so regular e-mail attachments would be too big for some e-mail clients to handle.

Understanding the need for both speed and security, Power Downloader instructed Foto to download the open-source file compression utility called 7-Zip. With this program, Foto could compress his optimized images in the 7z format for an up to 40 percent smaller sized file than is possible with most common compression formats. As an added precaution, Power instructed Francois Foto to use the software to encrypt the file with a top-secret pass phrase, using 7-Zip's AES-256 encryption method. Using a mix of letters and numbers in the phrase, Power Downloader wanted to make absolutely sure that if secret spies captured the file full of images in transit, they would be left with nothing but a useless and virtually impregnable file.

Soon afterward, the compressed file arrived via e-mail. Using the pass phrase, Power Downloader extracted the images to his hard drive. With the images opened in a viewer, Power quickly surmised the pictures were definitely of Phillipe the Phisher. Though the images alone would not be enough to arrest the villain, Power hoped authorities might be able to use Francois Foto's recent photos to identify Phillipe more quickly. When he finished, Power Downloader added the images to his case files using 7-Zip (another great use for the program) to conserve space on his hard drive.

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