AirPay - Integrate all payment channels via one single API

Unlock - Monetize your content with a few lines of code

Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.

ZELF - Instant money in messengers

Google Pay - Make secure payments right through your Android device.

MonetizeJS - Modern payment platform, no server required.