"General" on the "Miscellaneous" tab in the Configuration dialog to enable Unicode name support. Full support for Unicode files names by default is supported only for 7-Zip and RAR archive formats. Commandline batch compression is available only for ZIP and ALZ formats. UTF-8 file/path-names support was completed in release 3.0.1 on Unix systems, and in release 5.8.0 on Windows systems. GUI UTF-8 support for full internationalization of the application was completed in release 2.2.0. Optionally, extended characters can be set to be replaced by jolly "?" character for exporting scripts to legacy systems; scripts creation screen informs if commands are ANSI-safe, OEM-codepage-safe (on Windows), or requires UTF-8 compliant environment to run (system, command interpreter, etc). Commandline batch compression and expansion requires free add-on software downloaded from the WinZip website. Peazip supports file encryption and file name encryption, although only in certain types of archives, including its own Pea format, 7-zip, zip and Arc. Many shells have built-in zip file support. Windows Explorer has "Send To"->"ZIP-compressed folder". Unicode and volumes since version 3.0 (2008). AES since 3.1 (in beta). Archive format support Reading Information about what archive formats the archivers can read. External links lead to information about support in future versions of the archiver or extensions that provide such functionality. Note that gzip, bzip2 and xz are compression formats rather than archive formats. Notes: Used to, but no longer does, due to technical and legal issues. Tar implementations call external programs (like compress, gzip or bzip2 or any other programs working with abstract streams and supporting the "-d" option) to perform (de)compression, and allowing you to implement your own filters. These external programs may be shipped with your Operating System. GNU tar lets you implement your own filters , allowing you to use other compression programs (p7zip, ...) and filters (GPG, ...). Starting from version 11. Requires external program. More info Archive Utility itself is unable to open ISO files, but Disk Utility, which also comes with Mac OS X, is able to mount them as virtual disks. Requires external program. Only partial support for reading proprietary SITX format. FreeARC uses .arc as its filename extension, but this format is not the same as the traditional ARC file. Supports these formats as compression stream of other archive formats like tar.bz2 or iso.xz but does not support the format as an archive itself, as they are not archive formats. See the