You can host all services on your own metal. We don't have any closed source code. We run the same code that you run on.
We use Cockroachdb as our default database. This is a distributed database that allows for enormous scale and high availablilty.
The code of the services is available on GitGub. No more black box magic. Everything can be seen and modified.
We don't just provide technical tools, your entire team can easily make us of our services.
Feel free to add your ideas as issues.
Need help? Visit Stackoverflow.