Coda is a new type of document that blends the flexibility of documents, the power of spreadsheets, and the utility of applications into a single new canvas. It lets you make a doc as powerful as an app.coda.io
SurveyMonkey is online survey software that helps you to create and run professional online surveys.
Axure is a software for creating prototypes and specifications for websites and applications.
Google Analytics is Google's free web analytics service that allows you to analyze in-depth detail about the visitors on your website. It provides valuable insights that can help you to shape the success strategy of your business.