If you require a truly portable, open-source alternative that does not require installation, consider 7-Zip Portable from the PortableApps.com platform, which is a verified source for portable software. WinRAR 6.23 final released
: RARLAB only provides installer-based versions (e.g., .exe files) for Windows. They do not offer an official "portable" .rar version. Download File WinRAR_6.21 Portable.rar
: Version 6.21 is outdated as of April 2026. Critical security vulnerabilities, such as CVE-2023-40477 and CVE-2023-38831 (which allowed attackers to execute code via malicious archives), were discovered after 6.21 and fixed in version 6.23. Using an older version like 6.21 leaves you exposed to these exploits. If you require a truly portable, open-source alternative