Shareware: You can try this program, but this version has some limited features or time usage restrictions. You should purchase it in order to remove those limits.
RarZilla Free Unrar Portable 3.33
Unrar Extract and Recover 2.2
RarZilla Free Unrar 5.1
Command line freeware UnRAR for Windows. Extracts RAR and RAR SFX archive in command line mode.System Requirements:Intel Pentium (or compatible), 32MB RAM, 3MB of available hard disk space