Hatchbox is pretty cool, but not OSS - also doesn't use Docker IIRC if thats something you were looking for.
There's certainly something to be said about managed services though. For folks that don't mind managing their infra, OSS systems allow customizations and extensions that you wouldn't see from a managed service, but you potentially trade that for reliability guarantees and general maintenance. With Dokku for instance, I see folks go quite a while without upgrading - potentially causing issues when they do, but mostly making it so they miss out on features and bug fixes. For managed services like Hatchbox, you get that for free, but then the system might change underneath at a cadence you're unhappy with.
Hatchbox is pretty cool, but not OSS - also doesn't use Docker IIRC if thats something you were looking for.
There's certainly something to be said about managed services though. For folks that don't mind managing their infra, OSS systems allow customizations and extensions that you wouldn't see from a managed service, but you potentially trade that for reliability guarantees and general maintenance. With Dokku for instance, I see folks go quite a while without upgrading - potentially causing issues when they do, but mostly making it so they miss out on features and bug fixes. For managed services like Hatchbox, you get that for free, but then the system might change underneath at a cadence you're unhappy with.