Multisite Plugins for Event Calendar and Map Application

Hi,

I've just joined WPMU DEV and would like to ask whether there are multisite plugins that can address my needs below.

1. Event Calendar - where blog owners can post new events and show them locally within their blog, while the main site capture events from all blogs and display them together.

2. Map Application - something like store locator function, where logged in users can create new points/locations on a map display at the main site.

Thanks!