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.
Swapstack - Swapstack, now acquired by beehiiv! Check out what we're doing over at beehiiv's incredible ad network: https://www.beehiiv.com/features/ad-network/brands and come thrive with the hiiv!
Google Forms - Simple web forms from Google.
PEAR - Connecting newsletters and advertisers 🍐
Qualtrics - Qualtrics is the most trusted research platform, helping brands make crucial business decisions. From surveys to insights to action.
LetterWell - Buy and sell ad space in email newsletters