I was literally thinking of building something similar this summer, one requirement I had however was that it should be runnable/shareable over the web (it's we

I was literally thinking of building something similar this summer, one requirement I had however was that it should be runnable/shareable over the web (it's web-tech after all). My use case was storing a family tree with data/app that could be shared, and family members they would be able to add to it and later merge also. Ie, it's a webpage you can dump anywhere, then download/edit locally.