TinyGoOS: Is TinyGo an operating system?

[soypat]

Honest question, is it?

[aykevl]

Depends on your definition of an OS, I guess.
The TinyGo scheduler works a lot like the scheduler in a RTOS for example, using a similar mechanism to allocate and switch between "tasks" (goroutines). But it doesn't currently allow starting any tasks that aren't part of the program. So it may function internally like a mini-OS, but it's not very relevant since it can't be used to start any new process in an arbitrary language.

The same is true for the standard Go runtime, by the way.

[deadprogram]

It can probably fit the definition of an embedded operating system:
https://en.wikipedia.org/wiki/Embedded_operating_system