O(x)Caml in Space: When Functional Programming Meets Orbit

While everyone else is busy shoving Rust into every corner of the universe, a team of enthusiasts decided OCaml deserves a spot in the sun too. Or rather, above it. The Borealis project uses OCaml for satellite programming — which sounds like the setup for a functional programming joke, but turned out to be a working prototype.

The idea is that OCaml's strong typing and immutability make it a great fit for critical software where a bug costs more than extra fuel. The developers claim that OCaml code for satellites is more compact and reliable than C. Of course, it wasn't all smooth sailing: they had to write their own runtime and hardware bindings, but hey, space isn't supposed to be easy.

Under the hood

• Microkernel in OCaml — yes, running onboard, with near-real-time GC (mostly).
• Verification tool — types caught several bugs before compilation, saving both time and millions of dollars in space.
• CubeSat integration — standard nanosatellite, so any startup can give it a try.

Sure, production-ready "fly to Mars on OCaml" is still a long way off, but initial tests on stratospheric balloons showed that the GC doesn't kill the CPU instantly. And that's already a win.

METABYTE studio comment: We haven't launched satellites yet, but if your project needs spacecraft-grade reliability — OCaml or not, code still needs to be written. And we know how to do it (almost) bug-free.