Crosswalk does work on desktop (Windows, Mac, Linux) but it is currently "community supported" meaning that it doesn't go through the same amount of QA as for A

Crosswalk does work on desktop (Windows, Mac, Linux) but it is currently "community supported" meaning that it doesn't go through the same amount of QA as for Android and Tizen, and as a result might have more bugs - or occasionally not work at all.