On which site which JotForm can be integrated  began as a paid service and added a freemium option in 2009?
JotForm JotForm is a San Francisco-based online form building company. JotForm's software creates forms with a drag and drop creation tool and an option to encrypt user data. As of 2015, JotForm had 2 million registered users and 7,000 form templates. The forms can be integrated on external sites including MailChimp, PayPal, Stripe, and Salesforce.
Amazon Prime Amazon Prime is a paid subscription service offered by Amazon.com that gives users access to free one-day delivery, streaming video/music and other benefits for a monthly or yearly fee. As of April 2017, Prime has more than 80 million paying users.