This appears to be the most impressive NON-Campaign oriented DM tool yet. Simply put, its specifically for 1st Edition, and included UA. NOTE: The random tables and generators are taken directly from the Dungeon Master's Guide. Overall, I've just discovered this tool, and the only thing I can see missing as a reference tool is the combined items chart to outfit a player/store. Really, just look at the screenshots I've include below, with the now traditional extra info added in for clarity.