Google Forms
Google Forms, a capable and easy-to-use survey tool, is a free Google Drive add-on you can download at the Chrome Web Store (which also has free and paid business apps from third-party vendors). Create your survey from question templates (choosing between types such as multiple choice, checkbox, scale, or text answers), then either post it in a Google+ Hangout or distribute it via email. Recipients submit the completed form by clicking a button at the end. The survey itself and the responses are all automatically stored on your Google Drive, and you can view the results in either summary form (with auto-generated graphical aides) or in a spreadsheet.
