Thanks for the interesting perspective. I guess when I strip it down I've written a tiny layer of magic to convert a (bastardized)TinyDNS zone-file, or Bind zonefile, into Amazon Route53 update commands.

Selling that as a one-off utility would be hard, but it does currently work well as a hosted service via the webhook integration-layer, and a small amount of git-magic.

I will have a think to see if people would prefer it self-hosted, though nobody has expressed any interest in that previously.