Server-less Stripe push notifications with webscript.io
coovtech.com
coovtech.com
Possible alternative may be https://script.google.com -> "Script as Web App"
Especially when integrating with google's apps for domains and APIs.
Although I suppose you could get around the multi-push-certificate restriction with multiple Parse accounts. If you had two iOS apps, then you'd be making two web requests out to Parse. Although I do this now with UrbanAirship so there would not really be a difference. Interesting.