Gnomputer

A windowed desktop for the Gno chain, running entirely in your browser.

Open a realm, read the source it was deployed from, watch transactions land, inspect state — side by side, in resizable windows, against a live chain. No wallet, no signup, no install.

▶ Try it  ·  🎬 Watch a 30-second tour

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Why it's different

Everything is live chain data. Nothing in the running app is mocked or seeded. The proposals in that screenshot are real GovDAO proposals, and the events beside them are real events at the block height shown in the bar.

It reads source from the chain, not from GitHub. Open any realm and its actual deployed .gno files are there, syntax-highlighted, with imports clickable through to the packages they reference.

It's a desktop, not a page. Several realms open at once, windows you can drag, resize and maximize, an overview mode, a command palette (⌘K), and per-realm lens tabs — Render, Source, Docs, State, Eval, History, Actions, Graph, Raw.

Read-only by default, and honest about it. Guest mode needs nothing from you. Where data comes from an indexer rather than the chain itself, it says so next to the timestamp, because a freshly-fetched but stale answer looks identical otherwise.

It starts you somewhere. A first visit offers three things to click, not three things to read — live governance, a realm's on-chain source, events landing as blocks arrive. Each one proves the "this is live" claim faster than a paragraph asserting it.

Six themes, including one that commits.

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What's in it

Real, live data from Gno testnets — Pearl by default, with Sapphire, Topaz, betanet, a local gnodev option, and any custom RPC endpoint you add.

Browser	Any realm's rendered output plus gno.land's own pages, following Gno's internal link and pagination routing generically. Multiple tabs per window, multiple windows at once, and autocomplete against the chain's own package list.
Source	The realm's file tree and deployed source, straight from the chain, with real syntax highlighting and clickable imports.
Editor	Write Gno, save scripts locally, load community templates. Running against the chain needs signing, which this guest build doesn't do.
Shell	A real REPL over vm/qeval, with autocomplete for paths and function names.
Event Explorer	Decoded chain events — recent history first, then live as blocks land.
Block Explorer	Any block by height: header detail and a per-transaction list with gas and decoded event types.
Chain Stats	Gas and activity leaderboards, plus daily activity over recent history.
Network & Validator Monitor	Chain ID, live height, measured RPC latency, endpoint trust, and the full validator set.
Accounts & Users	Look up an address or a registered username: balance, sequence, deployed package count, and links out to gnoweb and an explorer.
Resources	The Gno monorepo's own docs/, live and navigable, plus the awesome-gno list.
History	Every realm, block and address you've visited, recorded as a Trail.
Favorites	Star a realm from its toolbar; it's on the Browser home and in the palette after that, scoped to the network you starred it on.

Star a realm and it's on the Browser home and in the command palette next time. Layout, theme, zoom and your chosen network persist across reloads too. Links carry the realm, the lens and the network, so a URL opens the same view for whoever you send it to. It installs as a PWA, and content you've already loaded keeps working offline.

The desktop metaphor is built for a real screen, and it adapts down to one. A fresh mobile visit gets a zoomed-out, maximized-window default; the island scrolls, window titles truncate, and the lens tabs collapse into an overflow menu. There's no horizontal scroll at 320px, which is narrower than any phone still in use.

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Run it locally

npm i -g pnpm@9.15.0
pnpm install
pnpm dev          # http://localhost:5173

pnpm typecheck && pnpm lint && pnpm test && pnpm build
pnpm --filter @gnomputer/web e2e    # Playwright, against a local mock chain

_{Screenshots and the demo video are generated from a running app against a real chain, never staged — refresh them with node scripts/capture-screenshots.mjs and node scripts/capture-demo.mjs from apps/web. Both take an optional URL argument so you can capture a local dev server instead of the deployed site.}

Docs

• CONTRIBUTING.md — repo layout, the architecture rules CI enforces, and the habits this codebase learned the hard way.
• AGENTS.md — for agents working here: probe the running app rather than reading it, and be precise about what was actually verified.
• SECURITY.md — threat model, the invariants around signing, and how to report a vulnerability.
• CHANGELOG.md — what changed, newest first.
• docs/adr/ — architecture decision records, several of which record conclusions that were expensive to reach: Gno RPC serves no event subscriptions, and the tx-indexer's schema is narrower than it looks.
• docs/product/gnomputer-spec.md — the canonical product spec.

Status

Slice 1, plus a good deal built past its original scope: a guest-mode, read-only PWA. Signing, local development against gnodev, and governance actions are later slices.