WePay is built to integrate into platforms like marketplaces & crowdfunding websites

Plasso makes accepting online payments easy

Recurly is a subscription & recurring billing platform

Coinbase Commerce allows you to simply use and accept Bitcoin in your product

Chargify offers recurring & subscription billing for app and SaaS companies

Chargebee offers subscription & recurring billing plans for online web apps and SAAS products

Accept payments online and and through mobile apps. Apply online, and be instantly approved.

Stripe is an online payment processor made for developers and is used by Launching Next