Malwarebytes Anti-Malware Portable is a free, portable version of the renowned Malwarebytes Anti-Malware software. It is designed to be run directly from a USB drive or any other portable device, allowing users to scan and clean infected computers without the need for installation. This portable variant offers the same level of protection as its installed counterpart, making it an excellent option for users who need to troubleshoot malware issues on multiple systems.