It evolved to scratch my own itch: simplifying the access, management, and monitoring of a fleet of distributed Raspberry Pis (running Raspbian, on private networks) without requiring any proprietary client-side code.
Though it meets the submitter's criteria, it's not [yet] providing enough to live off.
I did not know about Amazon GameLift. I guess I just used the word "fleet" to mean "a collection of similar things under unified control". (Unified control being the aim of the project.) In this case, as building block, I'm using robust, persistent reverse SSH tunnels.
It evolved to scratch my own itch: simplifying the access, management, and monitoring of a fleet of distributed Raspberry Pis (running Raspbian, on private networks) without requiring any proprietary client-side code. Though it meets the submitter's criteria, it's not [yet] providing enough to live off.