Hi Sarah!
Thanks for taking contact. Good to hear that you like GNU Backgammon.
Is it still under development? Hmmm... debatable. There has not been many major improvements the last few years.
Take a look at the projects ChangeLog.
As you see there isn't much happening.
Of course you can contribute if you want. After all this project is Open Source an anyone can do whatever changes they want.
Just post comments here on the mailing list, and it can shear up some of the sleeping developers.
If you are a developer and want to contribute with code, we can of course provide you write access to the cvs repository. (Yes, it is as old that it's using cvs to do code revision).
Since everyone is more or less "sleeping", there is no real TODO list. Maybe some code janitor work? Refactoring? Maybe c99-ify some of the code. Maybe you can suggest a feature? Or report a bug?
Even though I'm not doing much on GNU Backgammon (I've not done much the last 10 years) these days, I guess if we just chat about some details, it might be the spark that starts up a new motivation among us. There are some discussions still on this mailing list, last week there was a new Match Equity Table presented (Thanks Ian). If we just chat more, maybe something can start flowing again. I'm getting more time as my kids grow older. So, who knows what happens.
Best regards,
-Øystein