The difference is that required a local install, and this doesn't. In practice, browser plugins are dead, because of corporate security policies and the fact th

The difference is that required a local install, and this doesn't. In practice, browser plugins are dead, because of corporate security policies and the fact that desktop-environment knowledge is slowly disappearing from the population at large (people don't know how to safely install things, and don't want to know, they prefer the walled-garden one-click model).