A "portable" application is designed to run directly from a folder or USB drive without making permanent changes to the host computer's registry. Convenience
Easy syncing of fonts, colors, and assets. Adobe Illustrator CS5 portable
When you launch an Adobe Illustrator CS5 portable executable, it temporarily extracts the necessary files to a system’s temp folder, runs the application, and (in theory) deletes those files upon closing. No registry keys are written. No license is verified. This "run-and-hide" behavior is the primary allure for users. A "portable" application is designed to run directly