Mixmax Calendar - The fastest way to schedule meetings with anyone, anywhere
Catch - Catch is the easiest way to use ShowRSS on OS X. It'll take care of everything.
Meetingbird for Gmail - View your calendar and schedule meetings right from Gmail
What Got Done - The simple, lightweight alternative to team status meetings.
Calendly for Chrome - Schedule meetings without leaving your inbox
Flowist - A lightweight tool to boost your team's shared awareness