Portable packages are also available on Linux paltform, while DMG packages for macOS can be either installed or used as portable apps.

PeaZip Portable running in dark mode on Windows 10+ system.
Dark mode is also supported on pre-W10 systems using dark system themes.

Fearurs provided by the Portable packages

The portable version provides same set of features and supports same file formats - 7Z, ACE(*), BR, CAB, ISO, RAR / RAR5(**), sfx self extracting archives, TAR, ZIP, ZIPX, ZST... - as PeaZip but, as it does not need to be installed, it does not modify the host system.

Advantages in running a Portable package

Portable pakages are the best solution to bring a complete free zip / rar software with you (i.e. on an USB drive), make it available from network (a single copy on a shared disk for multiple clients), or simply to try the application's features.
For same reason this standalone package is the best choice whenever it is not allowed or desired to modify the host machine's operating system:
no installation is required to run the program.

How to use PeaZip free, portable RAR ZIP files utility

"Install" PeaZip Portable
To use this portable file archiver utility is very easy, as no installation is needed: just extract the software package (i.e. with integrated Microsoft's Windows Compressed Folders utility) to the desired directory, and simply start peazip.exe executable - file extension may be hidden on your device.

Use PeaZip Portable
Once the program folder is unzipped, PeaZip Portable can replace file archivers utilities like WinRar and WinZip for file compression, extraction, and archive management functions, working with 200+ archive formats including popular 7Z, ACE, BR, CAB, ISO, RAR, TAR, WIM, ZIP, ZIPX, ZST... and provides its usual set of advanced security features (encrypt / decrypt files, secure delete, file hashing, encrypted password manager).

Remove PeaZip Portable
To remove the program, after use or when it is no longer needed, simply delete it i.e. moving PeaZip Portable application folder to Recycle Bin.
It is possible to use PeaZip from command line and scripts, example scripts for supported platforms are provided in (peazip)/res/share/batch folder, being (peazip) the folder where PeaZip Portable is saved.
If desired, those scripts also allows to manually integrate PeaZip Portable in the host system's context menu and SendTo menu as effectively as the installable versions.

PeaZip Portable for Windows downloads notes