In the US there are a couple different groups working on similar projects.
http://www.helpsteps.com is mainly in the Boston area
http://www.auntbertha.com is based out of Austin
Http://www.healthify.us is another one.
There's also an open source project called Ohana that provides an open directory for community resources and services as well as API for people to deploy this sort of idea in their own community. http://ohanapi.org
There's also an open source project called Ohana that provides an open directory for community resources and services as well as API for people to deploy this sort of idea in their own community. http://ohanapi.org