Omszy Browser
v0.1 MVP · open source

The desktop browser
built for an AI sidebar.

Multi-tab browsing, a persistent assistant rail, and permissioned automation — all in a single original app for macOS, Windows, and Linux.

Download for macOS View source
  • Ollama, LM Studio, OpenAI-compatible, MiniMax
  • Page-aware chat · streaming · markdown
  • Local-first · OS-keychain secrets · no telemetry
Omszy Browser sidebar

Why Omszy

Real browser, not a frame

Native multi-tab browsing with Chromium webContentsViews. Back, forward, reload, address bar, drag-resizable rail. macOS-first, Windows and Linux ready.

Page-aware by default

Every chat automatically receives the page’s title, URL, visible text, selected text, and a sanitized actionable-DOM hint set — tagged as untrusted input.

Any model, any host

Bring Ollama, LM Studio, OpenAI-compatible endpoints, or MiniMax. Switch per chat. Mock provider ships by default for offline dev.

Permissioned automation

/act plans and runs browser actions. Every risky step asks before it executes. Purchases, 2FA, passwords are blocked by design.

Dark rail, restrained UI

Power-user density. Compact spacing, no flashy gradients. Original visual identity — not a clone.

Open and inspectable

Every chat, automation run, and permission decision is recorded in a local SQLite file you can query.

Providers

Plug in any of the following out of the box. Add a custom OpenAI-compatible endpoint with one click.

Ollama

Local, no API key.

http://127.0.0.1:11434

LM Studio

Local OpenAI-compatible.

http://127.0.0.1:1234

OpenAI / compatible

Hosted, key required.

https://api.openai.com/v1

MiniMax

Hosted, key required.

https://api.minimax.io/v1

Mock

Always available, offline.

omszy-mock-1

+ custom

Add any OpenAI-compatible endpoint in settings.

vLLM · Groq · Together · OpenRouter

Automation, gated

Type /act find the latest Electron release notes. Omszy plans a sequence of browser actions, shows you the steps, then executes one at a time — pausing for confirmation on anything risky. 

{ "steps": [
  { "action": "navigate", "url": "https://github.com/electron/electron/releases" },
  { "action": "waitFor", "selector": "h1", "ms": 1500 },
  { "action": "extractText", "selector": "article", "variable": "release_notes" }
] }

Sensitive actions (purchases, password entry, 2FA, checkout, destructive) are detected and refused by the planner. Even if forced, the executor demands explicit confirmation.

Download

macOS first · Windows and Linux compatible.

macOS Universal · Apple Silicon + Intel .dmg Windows x64 · Windows 10+ .nsis installer Linux x86_64 .AppImage

Package the app yourself: npm run package — outputs to apps/desktop/release/.