Download Osmium Coder
Mac, Windows, and Linux installers named OsmiumCoder. Free account by email code, no card. Once installed, the whole IDE and every core agent mode run on local models on your own machine at no cost. Cloud models are optional and use a Hub plan.
Free download
Create a free account to download
An email code is all it takes — no card, and no paid plan to install. Local models through Ollama, LM Studio, or local GGUF stay free on your machine, permanently. Cloud models use a Hub plan only if you want them.
Products
Osmium Coder (user) — download + account link
Create a free account, then download. Cloud models use a paid Hub plan when you want them. Sign in or create an account.
What’s included
- Free to download with a free account — no card and no paid plan to install.
- The full IDE: Monaco editor, terminal, git, debugger, ripgrep search, MCP, and preview.
- Agent, Plan, Ask, Analyze, and Debug running on local models through Ollama, LM Studio, or local GGUF — free and unmetered on your own hardware.
- 16 curated local models with VRAM figures, from about 2 GB up to 40 GB. Any other Ollama tag works too.
- Cloud models are optional and use a Hub plan and credits.
- Native Mac, Windows, and Linux installers named OsmiumCoder — no extra packages to install.
- Account sync via one-time download code — device auto-approved for your account.
- Installers are served from osmiumhq.com over HTTPS and update in place through the app; the Windows build is not Authenticode-signed yet, so SmartScreen may warn on first run.
- Plans & credits on pricing; manage devices on your dashboard.
macOS: “damaged and can’t be opened”
Chrome marks the DMG as quarantined. Prefer the one-liner setup above, or after dragging Osmium Coder into Applications run this once in Terminal:
xattr -cr /Applications/Osmium Coder.app && open /Applications/Osmium Coder.app