Seems that the WadAuthor page has been updated after a long dry spell with some good news:
Once my degree is completed, I will finally be able to return to working on WadAuthor. All of the added features mentioned in the previous updates are in place and working. I've also fixed several bugs reported over the last two years. My intent is to finish adding resource/lump-management code, and perhaps add another feature or two, before releasing the next version to the public. I know it's sadly overdue, and I know my credibility is probably as close to zero as it can get at this point, but I hope you'll forgive me in light of the circumstances of life.
For anyone living under a rock, WadAuthor is a level editor for Doom/Heretic/Hexen (and possibly Strife, but who really cares about Strife, right?) though due to real life issues (read the update for that info) the author (the WadAuthorAuthor, joke joke) hasn't been able to work on it much.