Are there good free tools to open RAR files for Windows, Linux or Mac?

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Yes, there are several good free tools available for opening RAR files on Windows, Linux, and Mac. Some of the most popular ones include:

7-Zip (Windows, Linux, macOS with a third-party GUI)

7-Zip is an open-source file archiver that supports various formats, including RAR. It is available for Windows and Linux, and there is a third-party GUI version called Keka for macOS.

PeaZip (Windows, Linux)

PeaZip is a free, open-source file archiver that supports multiple formats, including RAR. It is available for both Windows and Linux.

The Unarchiver (macOS)

The Unarchiver is a free, simple, and easy-to-use utility specifically designed for macOS that can extract RAR and several other archive formats.

B1 Free Archiver (Windows, Linux, macOS, Android)

B1 Free Archiver is a free, multi-platform file archiver that supports RAR and other formats. It is available for Windows, Linux, macOS, and Android.

Bandizip (Windows, macOS)

Bandizip is a lightweight, fast, and free archiving software that supports RAR and various other formats. It is available for both Windows and macOS.