We need more OS games so I'm glad you're making one! But I really suggest working a bit more on the build before releasing it to the public. This OS feels very janky at the moment, certain elements of windows overlap other windows, dragging the windows centers to your cursor and not around where you clicked, and so on. I'm not sure if this is intentional but Google is also misspelt in two different ways, one on the side bar and the other on the window itself ("Ggoggle and Goggle"). Reopening windows after they close puts them back to the same position where they were last, which can be a little annoying.
Shutting down the OS also has no way to boot it back up, you might wanna change that since it might be a hassle to refresh the page just to play again. Also the search doesn't work/doesn't display anything.
What would definitely help is adding instructions, and releasing the game in a far more stable state. People usually like to be able to play with a game, even if it is in beta, but this isn't realy playable.
This would be an interesting game to see, but please work on it a little more before releasing it on NG! It's a cool idea but it's even better if we can actually play with it