I've been using this great app for years. It's an essential tool in the travel hacking toolbox. As a linux user, I've had to run the desktop app using an emulator, so as an experiment I wrote a web app that's backed by the same data.
Since it uses the same data source, it will be just as out of date. Also, it has less bells and whistles than the app that cockpitvisit wrote. However, it might be of benefit to people who can't easily run windows apps.
http://airports.croz.us/
It's got bugs, and it's ugly in places. There's a feedback link if you've got any thoughts.