[header] How to run software directly off a usb flash drive [title] Navigate to the portableapps website. [step] This website provides a wide variety of open source and free portable applications-as well as a " platform " that helps you access and organize them. [substeps] Portableapps software is compatible with modern versions of windows. 
Portableapps isn't the only site from which you can access software that will run on a usb flash drive-but it is free and easy to use. Alternatives include http: // www.portablefreeware.com/and liberkey.