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Top 9 C operating-system Projects
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Project mention: Show HN: Ant – A JavaScript Runtime and Ecosystem | news.ycombinator.com | 2026-07-11
on linux its kvm, on darwin its hypervisor.framework, the memory is not upfront, by default 256mb is lazy allocated, and ~35mb are used by both ant + the vm. the kernel is https://nanos.org with patches to get ant+networking running smoothly
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Kargo
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RADII
RADII is a UEFI bootloader for the x86_64 architecture. It is made with the goal of understanding how modern desktop computers work, from hardware to radio buttons :^)
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Singularity
A viral, p2p OS for the Internet. Get paid for your knowledge and jacking your objects into the Cloud. Experience new plateaus of wisdom as you propagate your spunk towards the utopia of cyberpunk. GPL2&CC:SA-BY-NC (by LeFreq)
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C operating-systems discussion
C operating-systems related posts
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ToaruOS
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ToaruOS Has Been Archived
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Ask HN: High-quality resources for writing complex systems software?
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Minix from Scratch
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MINIX from Scratch
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MINIX from Scratch
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MINIX from Scratch
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A note from our sponsor - Kargo
akuity.io | 8 Sep 2026
Index
What are some of the best open-source operating-system projects in C? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | nanos | 3,190 |
| 2 | kernel-ml | 260 |
| 3 | CPL-1 | 33 |
| 4 | aurora | 32 |
| 5 | ics-os | 19 |
| 6 | RADII | 19 |
| 7 | Singularity | 10 |
| 8 | turnstone | 6 |
| 9 | mini_shell | 0 |
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