Solo - Personal kanban boards hosted on your own server

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

Cash App - The easy way to send, spend, bank, and invest.

pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features

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.

Ticket Tribe - Sell tickets online with no fees per ticket