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rcore-os/zCore

Some data may be outdated — see provenance labels.

Zircon microkernel reimplemented in Rust. observed · 2026-09-26

github.com/rcore-os/zCore · Rust · MIT (permissive) observed · 2026-09-26

Health v2 · maintenance only

83/100

  • Activity 93
  • Release rhythm 61
  • Longevity 100
How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.

  • gap_med: n/a
  • age_days: 2527
  • days_rel: 47
  • days_push: 44
  • n_releases_24m: 1

Full methodology

Adoption not part of the score

1779 stars · 218 forks observed · 2026-09-26

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

zCore is a reimplementation of Google's Zircon microkernel written in safe Rust, runnable both as a userspace libos program and on bare metal (x86_64, RISC-V, and other architectures). It also provides a Linux-compatible mode, allowing Linux applications to run on top of the kernel.

Use cases

  • run a Zircon-compatible microkernel written in Rust
  • study operating system kernel design in Rust
  • run Linux apps on a Rust microkernel
  • boot a custom kernel on RISC-V hardware
  • experiment with libos-mode kernels in userspace

When to choose

  • you want a safe-Rust microkernel compatible with Zircon syscalls
  • you need an educational or research OS kernel with Linux compatibility
  • you want to run a kernel as a userspace libos for easier debugging

When to avoid

  • you need a production-grade, fully Zircon-compatible kernel like Fuchsia's
  • you need broad hardware driver support or a general-purpose desktop OS
  • you need long-term commercial support

Facets

library · maturity active

interpreter embedded concurrency operating-systems programming-languages embedded-systems rust cpp microkernel zircon os-kernel rust-os qemu riscv libos research-os linux

1 source

Member repositories

RepositoryRoleHealth v2
rcore-os/zCoremain83

For agents

markdown · JSON · MCP: product_card(name="rcore-os/zCore")

Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem