Porteus is a small (under 300MB) portable linux distribution based on Slackware linux and a heavily modified version of the linux-live scripts. It is modular in design, meaning programs (or collections of programs) can be installed and removed simply by double clicking on module files. Unlike other Linux distributions that have a 'live CD' option, or can be shoehorned onto a flash drive, Porteus is designed and optimized to run from a USB flash drive, flash card or CD. It can also be installed in it's compressed form to an external or internal hard disk (AKA a 'frugal' install). With it's small footprint, modest system requirements, wifi support and modern kernel, Porteus is also ideally suited to run on netbooks.