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.

Img.vision - Image hosting & video hosting for eCommerce sellers

ACH payments with Stripe - Accept bank payments with a few lines of code.

UploadHouse - Thumbnail and resize your photos and images

TrueLayer - Simple Bank APIs to access real-time financial data

ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.