Facebook Messenger Description from Publisher (Facebook)
Keep up with friends, no matter what you’re doing.
Chat while you do other stuff
Get notified instantly
With the new standalone Messenger app, now messaging with friends is faster than ever. Messages are delivered instantly, and they’re always just a click away.
Group conversations make it easy to message everyone at once and see where your friends are. Don’t want to share your location? Turn it off with one click.
How do I install the Messenger desktop app?
If you have Windows 7, you can set up the app by clicking the Install button on the Messenger for Windows page.
If you use Windows XP, Windows Vista, Mac or another operating system, you won’t be able to install the app at this time. We’re working on making the app available for more operating systems, so stay tuned.