My attempt to put as many 616 and AU children of the X-Men (and other Marvel characters) together as possible. It's going to be out of date in a month, and there's NO WAY I haven't missed kids (plus, I haven't actually read some of the comics the kids are from) but it's a lot easier find this info here than on the wikis I've found.
There are now a LOT of entries that don't involve X-Men. I'm keeping the title, though, because it's far from exhaustive and I refuse to do entries for Avengers I don't like. I'm only promising X-related babies :P