If you're looking for a tool to integrate with Framer for your online course's membership feature, FramerAuth is a good option. This no-code integration right in Framer projects lets you control membership abilities without having to write any code. Features include customizable forms, automatically generated Lemon Squeezy keys for license key management, and a 14-day free trial. It costs $14.99 per month, which is relatively cheap for creators.
Another option is Staarter, a Next.js SaaS boilerplate designed to get you up and running faster. It's got strong authentication and authorization, subscription management with Stripe, Paddle, or LemonSqueezy, and full localization support. It can save you hours of coding time and offers a full-featured set of features for your scalable SaaS projects. It costs a one-time payment of $399 for lifetime access.
If you want more features, Kobble is an all-in-one platform that handles authentication, payments, emailing and more, with built-in support for modern frameworks like Next.js. Kobble's no-code authentication portal and Stripe payment integration make it a good option for developers. Pricing is tiered, with a free plan and other options starting at $25/month.