Laravel Cashier provides an expressive, fluent interface to Braintree's subscription billing services. It handles almost all of the boilerplate subscription billing code you are dreading writing. In addition to basic subscription management, Cashier can handle coupons, swapping subscription, cancellation grace periods, and even generate invoice PDFs.
Documentation for Cashier can be found on the Laravel website.
Laravel Cashier is open-sourced software licensed under the MIT license