Just found a little interesting application on facebook that related with Facebook Chat called as Appear Offline. This Facebook Application would help you to check anyone who are online using Facebook Chat without you need to be “online” on Facebook Chat.
This means that you don’t even need to activate (turn on) the Facebook Chat or login to Facebook Chat to find out whose your friends that being online on Facebook.
You can try this Appears Offline Facebook Chat Online Checker by visiting this link. Just click the link and you’ll open the official page of Appears Offline, then click “Go to Application”, click “Allow” then you’ll ready to use it.
Remember, this application is third party application of facebook, that means did not officially from Facebook. And it can’t be used to check Invisible Status on Facebook Chat! Don’t be misunderstand about this one!