77zip

77zip 9.2

Free
Versatile compression tool with support for nearly all known archive formats
3.7  (17 votes)
1.7
9.20 (See all)

77Zip is a free archiving utility with support for most popular archive formats, especially at the unpacking side. These include 7z, ZIP, RAR, CAB, ARJ, and ISO, to name but a few. It offers you a long list of customizable parameters, giving you full control how the archives are created, compressed, and packed.

Though 7z seems to be the star archive format among those supported, you will also find other well-established file extensions along the full list of archive types that 77Zip can work with. The best compression ratios, however, seem to have been reserved for 7z files, together with the possibility of creating self-extracting archive files. The list of archive types you can choose from when creating a new one includes ZIP, TAR, and WIM. Only 7z and ZIP allow for customization when it comes to the compression method used – 7z supports LZMA, LZMA2, PPMd, and BZip2, while ZIP archives can also be compressed using Deflate and Deflate64. Both formats allow for further customization, including the compression level, the size of the dictionary and words, the number of CPU threads to be used, the encryption method, or the possibility of adding a password to the new archive. WIM and TAR files, however, have no access to any of these settings.

The list of well-known supported archives grows when we move to the unpacking area. Here you will find all the usual suspects, such as ARJ, ISO, CAB, CHM, MSI, FAT, NTFS, or RAR. Regrettably, RAR archives, though being one of the most widely used archive formats, do not receive the same level of attention as, for example, ZIP archives, and are supported only at the unpacking side.

77Zip comes with an intuitive and simple interface, being an easy-to-use utility suitable for all types of users, and it also offers a command-line version to those interested. It has been described by its developers both as an open-source and a “free” licensed application. The source files, however, are nowhere to be found, and I could not see any other reference to its open source origin neither in its EULA nor anywhere else in the program’s site.

Francisco Martínez
Editor rating:

Review summary

Pros

  • Support for most well-known archive formats.
  • Command-line version available.
  • Improves PKZip and WinZip compression ratios.
  • Attractive and intuitive interface

Cons

  • Though described as an open-source tool, the source files are nowhere to be found.
  • RAR archives are supported only at the unpacking side

Related stories

See all
Best Tools to Boost Your File Copying Speed
Best Tools to Boost Your File Copying Speed
Windows Search alternatives: find a file in record time
Windows Search alternatives: find a file in record time
How to randomly rename files in a folder
How to randomly rename files in a folder
The best tips and tricks for using the File Explorer
The best tips and tricks for using the File Explorer
Microsoft is injecting ads for OneDrive into File Explorer
Microsoft is injecting ads for OneDrive into File Explorer

SI comments

Thank you for rating the program!
Please add a comment explaining the reasoning behind your vote.
3 comments
Your vote:
Guest

Guest This app is bad and the download installs adware: nod32 a variant of Win32/InstallBrain.BZ

Reply   |   Was it helpful? yes | no (0)
Yulian Rohmy

Yulian Rohmy Dear User!
Thank you for the report! We have taken it into account.

Reply   |   Was it helpful? yes | no (0)
Guest

Guest 77zip is NOT 7zip. 77zip includes Delta and other adware - 7zip is and always has been clean.

Reply   |   Was it helpful? yes | no (0)

Facebook comments

Latest stories

See all
You now need to provide a phone number to play Dota 2 ranked
You now need to provide a phone number to play Dota 2 ranked
Reading thoughts, hearing with skin and more Facebook fun
Reading thoughts, hearing with skin and more Facebook fun
Check out Ancestors: The Humankind Odyssey's first trailer
Check out Ancestors: The Humankind Odyssey's first trailer
Install MacOS on PC
Install MacOS on PC
Windows Insider introduces a Power Throttling feature
Windows Insider introduces a Power Throttling feature
Info updated on: