You can download a program called "Availability tool".
It's free of charge although it only works a few hours every day (it will tell you if the system is "up" or "down" when you start it).
But when it's up you can find all kinds of information about availability, how many tickets left for each fare class, timetable information, even seat maps for each individual flight.

About download. Don't remember which site but try one of the major search engines and I'm sure you'll find it.

Merry christmas and welcome to FT btw.