The RustyHermit Unikernel: unikernel written in Rust

This page summarizes the projects mentioned and recommended in the original post on

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  • ocaml-opium-unikernel

    Example unikernel using opium + httpaf (using

    Lwt [1] based web frameworks can be used on MirageOS if they provide an interface that allows someone to swap out the unix dependent pieces. One such framework is Opium [2], that provides most of its features in a unix independent code library `opium_kernel`. Its fairly straightforward to run an opium app on mirage. This example needs to be updated to the newest apis in the released version of Opium but this can provide some hints about how to run an opium app on mirage:

    If a lower level web toolkit is sufficient then ocaml's cohttp [3] library has been available on mirage for quite some time now.




  • ling

    Erlang on Xen

    No, it was not Jitsu. Jitsu is based on MiragOS/OCaml, Erlang-on-Xen was also a Xen-based unikernel like MirageOS but was (as you can guess) Erlang specific. I think you can now find it at .

  • Scout APM

    Less time debugging, more time building. Scout APM allows you to find and fix performance issues with no hassle. Now with error monitoring and external services monitoring, Scout is a developer's best friend when it comes to application development.

  • httpaf

    A high performance, memory efficient, and scalable web server written in OCaml

    Thanks for chiming in!

    Sadly cohttp is (or was) performing so bad that it is kind of at odds with using it on a unikernel.

    This one is quite a bit faster:

  • paf-le-chien

    Port of HTTP/AF & H2 with Mirage and mimic

    The `opium_kernel` example I linked to above is running on top of which is a mirage layer for httpaf.

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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