[kkyryl]

(full disclosure – I work at FastSpring as a Product Manager)

Really sorry to see Kagi go. I think they had their reasons to close overnight and I really hope everyone will get the payout in full. End of an era..

Thanks everyone who mentioned FastSpring as a possible alternative – we are indeed way closer to Kagi than Stripe. We are (and Kagi were) what is called an MOR (Merchant On Record) and that's why we collect all the taxes, handle compliance, multiple payment methods and everything else that makes platforms "convenient" for a smaller business and "hands off" approach to all those issues. Stripe is (without deeper explanation) a payment processor (which means you are responsible for taxes/fraud) and their rules are stricter.

With that said, if you are not afraid of development work and tax/fraud/compliance issues don't bother you Stripe would be the best/most customizable/integrate-able option (with the exception of their Java API as we learned above :)

If you would still like "hands off" approach and let someone handle your taxes, compliance, payment methods etc I would recommend going with FastSpring. As it was mentioned, we are very supplier-friendly and will help you get up and running. We also have new cool APIs/Webhooks so give us a go if you are looking for a replacement.