Conode - A simple editor to organize meetings

Ghostnote - Add notes to anything.

Let's Meetup - An easy way to share POIs and addresses in iMessage

Context Note - Context Note is a free chrome extension that help you take notes on the web with their context.

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

Page Pad - Page Pad is a productivity tool for creating notes on any particular web page you visit.