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.
QuickMark - QuickMark makes everything possible.
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!
Barcode & QR Code Scanner - A free app which allow to read and generate barcodes for Android.
Google Forms - Simple web forms from Google.
ZXing - Barcode Scanner for Android