Seating plan software recommendations (does such a beast even exist?)

Question

I\'m getting married soon and am busy with the seating plan, and am running into the usual issues of who sits where: X and Y must sit together, but A and B cannot s

Answer 1

I expect this isn't a great answer, but you could research flocking behavior

If you take away the random jitters at each step, the flock eventually settles where each member has found its optimum position in relation to the rest of the group.