Minimal container-like sandbox built from scratch in C
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Runbox recreates core container features without relying on existing runtimes or external libraries. It uses namespaces, cgroups v2, and seccomp to create an isolated process environment, with a simple shell for interaction. For future gonna work on adding an interface so external applications can be executed inside Runbox, similar to containers.Github: https://github.com/Sahilb315/runboxHappy to hear feedback or suggestions.
HN · launched Dec 7, 2025 · 5 upvotes (top 90%) · 0 views
Niche: code execution sandboxes · 37 launches, 1 in the last 7 days · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Developer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 37 launches in code execution sandboxes →
Could you build this?
No Writing a Linux container sandbox from scratch in C demands low-level systems programming knowledge of the Linux kernel, unshare/clone syscalls, mount namespaces, cgroups v2 hierarchy, and BPF/seccomp filter configurations.
What it would actually take: Requires native C programming interacting directly with Linux kernel interfaces (clone(2), unshare(2), pivot_root, setns). The developer must configure cgroups v2 control files (/sys/fs/cgroup) to constrain memory/CPU and construct BPF byte-code rules via libseccomp to restrict dangerous system calls. Deep expertise in Linux systems internals, kernel security primitives, and virtual filesystem isolation is strictly required.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one : 262 launches clear the similarity bar, closest 8 shown.
Attention rank: #257 of 263 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 36 days after the earliest competitor.
- Keystone · hn · 2026-02-18 · 12 upvotes · similarity 0.52
- Nucleus · hn · 2026-06-09 · 40 upvotes · similarity 0.50
- sandbin · ph · 2026-09-12 · 2 upvotes · similarity 0.50
- ContainerDesk · ph · 2026-11-02 · 1 upvotes · similarity 0.50
- Render Sandboxes · ph · 2026-11-04 · 250 upvotes · similarity 0.49
- ContainerDesk · github · 2026-10-29 · 37 upvotes · similarity 0.49
- MXC · ph · 2026-10-10 · 1 upvotes · similarity 0.48
- Drop · hn · 2026-09-22 · 189 upvotes · similarity 0.47
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