SurveyMonkey was the first tool I explored. In fact, it is what I created my survey with. I have had some previous experience with this particular survey, and it is great. The breakdown of data and demographics are really helpful.
There are also places like freeonlinesurveys.com and polldaddy.com that are pretty good alternatives. All of these programs are similar and achieve the same goal. I am just partial to SurveyMonkey due to previous positive experiences.
There are also some good tools that teach how to form survey questions for the most useful results. The website, esurveyspro.com, provided a guide as to how to form proper questions and engage customers. This was extremely helpful because anybody can make up questions on any of these sites. But, if the questions asked do not yield useful results, then the survey did no good.