jQuery is a cross-platform JavaScript library designed to simplify the client-side scripting of HTML. It is free, open-source software using the permissive MIT License. Web analysis indicates that it is the most widely deployed JavaScript library by a large margin.
Stripe is an online payment processing tool for internet businesses. Stripe handles everything, including storing cards, subscriptions, and direct payouts to their bank account. Meticulously designed APIs and functionality help users create the best possible product for their users.