Network of activities
CoNet will help you.
Associations, organizations, and people can register any kind of activity on CoNet, allowing you to know what you can do, or what you can sign up for.
CoNet will be an Open-Source mobile app connectable with other services like Facebook, Twitter or Google+.
People will be able to join CoNet using their social network account, and link to any activity any kind of information, like:
Any information added on an activity will not be shown until it is accepted by one of its founders.
Following the principles of Open Data, every information about any activity will be accessible through an API, allowing people to create mirrors easily.