Thanks again for doing this btw!
I am not familiar with the.. um.. I guess you could call it the landscape of the freespace community but this was a top search result.
and here is a github project that looks correct.
https://github.com/scp-fs2open/fs2open.github.com
And now, for free, an opinion. I enjoyed descent, but did not like freespace, I am sure there is fun subtlety to the game, but I bounced off it hard, combat in open space ended up being just these really boring circle battles. Much funner combat when you have tight claustrophobic corridors to deal with.
They're just different games. I love them both for what they are. It's a shame that Interplay tried to use the Descent name to sell more copies, because even if there was some minor inspirations in development, Freespace definitely stands solidly on its own two feet without the tie.