Tiny VM sandbox in C with apps in Rust, C and Zig
Details
- External ID
- 46249538
- Source
- HN
- Company
- —
- Product
- Tiny VM sandbox in C with apps in Rust, C and Zig
- Website domain
- github.com
- Launched
- Dec. 12, 2025
- Cohort
- —
- Upvotes
- 196
- Upvotes percentile
- 0.9465648854961832
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Enrichment
- Theme
- systems tools and desktop utilities
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- vm sandbox in c with apps in rust c and zig
- Manually corrected
- False
Could you build this?
No Writing a virtual machine sandbox in C that interprets custom bytecode or an ISA (like RISC-V or WebAssembly) and supporting cross-compiled guest binaries in Rust, C, and Zig requires low-level systems programming and hardware architecture knowledge.
What it would actually take: The architecture requires a C-based emulator/runtime executing an instruction set architecture (such as RISC-V, eBPF, or custom bytecode) with memory sandboxing, register state machines, and system call traps. The hard parts include memory safety boundaries, ISA decoding and execution semantics, and developing target-specific toolchains or linkers for Rust, C, and Zig guest runtimes.
Discussion
12 comments analyzed.
Competitors mentioned: WASM-micro-runtime (WAMR), libriscv, Wasefire, mini-rv32ima
Concerns raised: RISC-V immediates decoding slow in software vs hardware, Larger code footprint than WASM alternatives, Performance compared to embedded WASM interpreters
Feature requests: Memory-mapped IO simulation support for IoT/microcontroller driver testing
Competitors
Other products that read as similar to this one — 663 launches clear the similarity bar, closest 8 shown.
Attention rank: #37 of 664 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 42 days after the earliest competitor.
- Zeroboot · hn · 2026-03-17 · 20 upvotes · similarity 0.63
- Hosting 100 Linux dev environments on one VM using LXC · hn · 2026-01-10 · 16 upvotes · similarity 0.55
- ZSvirt · hn · 2026-09-02 · 72 upvotes · similarity 0.53
- Node-Vmm · hn · 2026-05-04 · 8 upvotes · similarity 0.52
- Kern · hn · 2026-08-24 · 70 upvotes · similarity 0.51
- WolfStack · hn · 2026-03-08 · 32 upvotes · similarity 0.50
- Blast · hn · 2026-08-28 · 11 upvotes · similarity 0.50
- Z-Jail · hn · 2026-07-01 · 23 upvotes · similarity 0.50
Other launches for this product
- No other launches for this product.
Same idea, different domain
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