Ouch! Illustrations by Icons8 - Professional, perfectly matching, and customizable illustrations for any designs

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.

Control Illustrations - 108 free flat illustrations with customizable characters

Bonsai Payments - Simple invoicing & payments for small businesses and freelancers. Collect instant payments or set up recurring payments. Get paid via credit card or bank deposit in 100+ currencies.

Humaaans - Mix-&-match illustrations of humans with a design library.

Revolut - The easiest, fastest way to save for your financial goals.