Solo - Personal kanban boards hosted on your own server
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.
Cash App - The easy way to send, spend, bank, and invest.
MightySignal Top SDKs - Most used SDKs in top 200 free iOS apps. Learn what to use.
PayPal.Me - Request money using your own personalized URL.
bunq Apps - Create and market apps that work with bank accounts