JotForm is the first web-based WYSIWYG form builder. Its drag and drop user interface allows you to easily create web forms. You don’t need to have any web design or HTML experience to create web forms. After creating the forms, you can integrate them to your site to collect submissions from your visitors.
JotForm supports all standard web form field types like Contact Form, Document Uploader, Blog Contact/Survey, Reservation Form etc.
You can customize it using themes. They also have themes like IndustrialDark, BabyBlue, PostItYellow.
JotForm is free of cost. But you can only receive 100 form submissions and 3 payments every month. You can remove these restrictions by paying $9 per month.