Viral Loops - Viral Loops is a viral and referral marketing platform to launch ranking competitions, sweepstakes, pre-launch and referral programs.
Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
Referral Candy - Run a fully automated, customizable and easy to integrate referral program for ecommerce.
Google Forms - Simple web forms from Google.
UpViral - Referral marketing platform enables anyone in running effective and profitable viral marketing campaigns – in minutes.
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.