Conode - A simple editor to organize meetings

Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.

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

Drag for Gmail - Transform Gmail into organized To Do lists (like Trello)

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

KanbanMail - A Kanban board for your emails.