I've used their contact forms for many years and really happy with them. They provide the HTML and PHP code, it's not really a saas product. Can't really compare to some of the alternatives as it's more of a traditional offering where you install and host the form on your own website.
Jotform - Free Online Form Builder & Form Creator
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.
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!
Google Forms - Simple web forms from Google.
Hubspot Forms - Convert your visitors into leads and grow your business
Wufoo - Wufoo's HTML form builder helps you create online web forms. Use our web form creator to power your contact forms, online surveys, and event registrations.