Not only gamer- or modding-communities are very conscious of the history of technology, but it seems to me that ‘online culture’ in general is—Éric Lévénez maintains a ↑Unix History website, featuring “a simplified diagram of unix history. There are numerous derivative systems not listed in this chart, maybe 10 times more! In the recent past, many electronic companies had their own unix releases. This diagram is only the tip of an iceberg, with a penguin on it ;-).” For your convenience he stores several printable formats of his unix family tree for download … in case you still are searching for an appropriate poster to put on your office’s walls.