Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Mixpanel - Mixpanel is the most advanced analytics platform in the world for mobile & web.
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Woopra - Track your customers' web and mobile activity, forms, emails, support tickets and more, all in one place with customer analytics. Analyze and take action.
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.