#1
Formify - Questionnaire & Registration Form Template
Formify has 30+ unique demos which are modern and clean designs that are fully responsive. Login, Registration, Questionnaire, Multistep, Survey, and contact pages are available here. The code is excellently formatted and commented on. It is easy to customize.
#2
Modal Survey - WordPress Poll, Survey & Quiz Plugin
Modal Survey WordPress Poll, Survey & Quiz Plugin provides the opportunity to hear your visitors’ voice through attention grabbing polls. Unlimited surveys, questions and answers helps you to get any information, then display the results through stunning progress bars, beautiful pie charts or simple text display formats.