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Spared

self-hosted Workers and Durable Objects for Rust apps

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Hi HN,I wanted something like workerd + celld for untrusted Rust apps and couldn’t find anything that quite fit. That said, I got a lot of inspiration from workerd, celld, spin, and wasmcloud.spared (spare-dee) runs Rust apps + SQLite in isolated WASM sandboxes. It lets you run many apps per server, and by packaging SQLite inside the sandbox, you get better isolation than running it on the host. This opens the door to running untrusted code on a single machine.It's open source and runs on any VPS.It's still early, and there's still a lot to build, but it feels like it's at a good place to share. Let me know what you think.Repo: https://github.com/michaelmagan/spared

HN · launched Nov 11, 2026 · 5 upvotes (top 86%) · 0 views

Niche: serverless computing platforms · 19 launches, 6 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 19 launches in serverless computing platforms →

Could you build this?

Partial A basic runner for Rust apps in WASM sandboxes with SQLite is buildable on wasmtime. Production-grade isolation, durable object semantics, and multi-tenant scheduling are specialized systems work.

What it would actually take: Use wasmtime or a similar runtime with WASI for sandboxing, SQLite per app for state, and an HTTP gateway for routing. The hard parts are securing untrusted code against escapes, resource limits, and consistent durable-object semantics across restarts and replicas. This needs distributed-systems and security expertise.

Discussion

No comments on this launch.

Competitors

Other products that read as similar to this one : 297 launches clear the similarity bar, closest 8 shown.

Attention rank: #267 of 298 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 368 days after the earliest competitor.

  • Numax · hn · 2026-06-16 · 6 upvotes · similarity 0.50
  • OpenWorkers · hn · 2026-01-01 · 500 upvotes · similarity 0.46
  • Shrouded, secure memory management in Rust · hn · 2026-03-23 · 5 upvotes · similarity 0.46
  • awesome-rust-apps · github · 2026-09-15 · 51 upvotes · similarity 0.45
  • gamedb · github · 2026-10-01 · 26 upvotes · similarity 0.45
  • Rowcraft · ph · 2026-10-20 · 1 upvotes · similarity 0.44
  • Sklad · hn · 2026-02-02 · 22 upvotes · similarity 0.44
  • Cygnus · hn · 2026-07-25 · 8 upvotes · similarity 0.44

Related data

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