The first thing to point out about portability is that not all browsers run on all operating systems. While { -brand-name-firefox }, { -brand-name-chrome }, { -brand-name-edge }, { -brand-name-brave } and { -brand-name-opera } work on all major systems and are easy to install, { -brand-name-ie } and { -brand-name-safari } only work on { -brand-name-microsoft } and Apple’s own systems. The mobile version of { -brand-name-safari } is pre-installed on Apple’s mobile devices, and most { -brand-name-android } devices come with a pre-installed browser modified by the manufacturer for the device. { -brand-name-firefox }, { -brand-name-chrome }, { -brand-name-brave }, { -brand-name-edge } and { -brand-name-opera } can easily be installed and even used side by side.
Lo primero que hay que señalar sobre la portabilidad es que no todos los navegadores funcionan con todos los sistemas operativos. Mientras que { -brand-name-firefox }, { -brand-name-chrome }, { -brand-name-edge }, { -brand-name-brave } y { -brand-name-opera } funcionan en todos los sistemas principales y son fáciles de instalar, { -brand-name-ie }  y { -brand-name-safari } solo funcionan en los sistemas de { -brand-name-microsoft } y Apple. La versión móvil de { -brand-name-safari } está preinstalada en los dispositivos móviles de Apple, y la mayoría de los dispositivos { -brand-name-android } vienen con un navegador preinstalado modificado por el fabricante para el dispositivo. { -brand-name-firefox }, { -brand-name-chrome }, { -brand-name-brave }, { -brand-name-edge } y { -brand-name-opera } pueden instalarse fácilmente e incluso usarse a la vez.