We[1] use Stripe[2], Braintree[3], Coinbase Commerce[4], and GitHub Marketplace[5].

We built our own quote logic including prorating, etc. then apply that as recurring subscription using Braintree if customer wants to pay with PayPal, or Stripe if customer wants to pay with credit/debit card.

Breakdown by processor:

73% Stripe

26% Braintree/PayPal

0.7% GitHub Marketplace

0.3% Coinbase Commerce

[1]: https://wakatime.com/

[2]: https://stripe.com/

[3]: https://www.braintreepayments.com/

[4]: https://commerce.coinbase.com/

[5]: https://github.com/marketplace