Family Tree Builder (www.myheritage.com
) claims to do a version of one - you have to pay if it's more than 250 people, I believe.
Never used it - just also looking for one, and that's one that I came across.
Also, I wrote to "TreeDraw" (add-on for Legacy bu SpanSoft), and while they don't do a simple "all in one", they told me that I can keep importing branches until everyone is represented. Sounds like a bit of a pain to me, but another possible solution.