SurveyMonkey is the most popular software program for conducting online surveys and analyzing the resulting poll data, according to a recent report from Capterra.

The researchers ranked the popularity of survey software solutions based on three criteria: the number of customers (unique companies/organizations that are actively using the software), the number of users (employees who create and manage surveys), and social media presence (Facebook likes, Twitter followers, Google +1s, LinkedIn followers, Klout scores, and number of online reviews).

SurveyMonkey has the most customers (2.35 million) of any survey program examined, as well as the largest social media presence; it is tied with QuestionPro for the most number of users (2.5 million).

QuestionPro received the second-highest composite popularity score, followed by Qualtrics, SurveyGizmo, and FluidSurveys.

Check out the infographic for the full rankings from the report.

About the research: The rankings were based on the number of customers and users for each software solution, as well as social media presence.