Google Calendar: With Google's free online calendar, it's easy to keep track of life's important events all in one place.
Huddle: Huddle is a cloud-based collaboration and content management software.
Time Doctor: Time Tracking and Time Management Software that is accurate and helps you to get a lot more done each day.
RememberTheMilk: is the popular to-do list that's everywhere you are: from your phone, to the web, to your Google apps, and more. Used by millions worldwide.
Readitfor.me: Readitfor.me is one of the most affordable ways to transform your future. We'll give you beautiful, engaging visual summaries of the world's best ideas.
Summary.com: Executive book summaries, reviews & webinars of the best business books.
Heyo: helps you easily create Facebook contests, sweepstakes & mobile-optimized landing pages to help you get more fans, leads and sales.
Commun.it: Grow followers & manage multiple profiles with Commun.it
Endomondo: is a sports community based on free real-time GPS tracking of running, cycling, etc. Bring your mobile on the track and get a complete training log!