Temporal
Temporal is an easy-to-use, enterprise-grade interface
...Should you not have the resources, or interest in maintaining your own infrastructure you can take advantage of our hosted API running in our very own datacenter. Those who have the interest, and/or resources may deploy Temporal within your own environments. For those that deploy Temporal themselves, we offer paid for support, installation, tutorials, and product usage information sessions allowing organizations to leverage all the capabilities that Temporal offers. Temporal is modular such that the underlying protocols it connects to, can easily be upgraded, and replaced with without having to change the overall architecture.