the browser where
you decide.

Osmium is a Chromium-based browser stripped to it's core. no bloat, no tracking, no decisions made for you. build your browsing experience with addons, exactly how you want it.

Download Osmium → Browse Addons
built different

everything you need.
nothing you don't.

out of the box, Osmium gives you a tab system, an address bar, and security controls. every other feature is your choice.

Clean Tab System

a simple, fast tab system with no visual noise. tabs do what tabs should do, and nothing more.

Address Bar

navigate to URLs directly. install a search engine addon to unlock search directly from the bar.

Security & Permissions

granular per-site and global security settings built in from day one, no addons required. Osmium itself never tracks your activity.

Osmium Addons

extend Osmium's functionality with our custom addons. every addon is placed through a thorough review process to ensure it's honest about its capabilities, permissions, and security practices, and hosts no malicious content.

Downloads Manager

a minimal built-in downloads panel with strong security. easily see progress, block, and manage your downloads without any distractions.

No Account Required

no sign-in, no sync, no telemetry by default. Osmium is yours and only yours from the moment you open it.

Your browser.
Your rules.

Pick an addon below and see how it changes Osmium — install only what you actually want.

Barebones
Search Engine Search
Bookmarks Navigation
DevTools Developer
Dark Theme Appearance
Ad Blocker Privacy
Live Translate Utility
History Navigation
osmiumbrowser.dev
6 ads blocked
Translating page from Japanese → English

Osmium is a browser built on simplicity. Every feature is an addon — nothing is forced on you. install only what you need.

元のテキスト: Osmiumはシンプルさを基盤とするブラウザです。すべての機能はアドオンです。

Recent History
Osmium Browser - osmiumbrowser.dev just now
are there any actually good browsers? - google.com 14m ago
why is every browser so bloated? - google.com 16m ago
Flyier Grading - flyier.xyz 18m ago
Elements
Console
Network
Sources
<html lang="en">
  <head> … </head>
  <body>
    <nav class="nav"> … </nav>

Start how you want to.

on first launch, Osmium walks you through setup where you can either choose a preset or select each addon individually — you can even just skip it entirely. every choice is reversible.

Lite

a minimal setup with just the essentials. perfect for users who want a lightweight browsing experience.

  • History & Bookmarks
  • Page Zoom and Search
  • Incognito Mode
  • Basic Page Saving and Printing
  • Search Engine of Your Choice
Plus

everything in Standard, with more variety and customization. endless utilities from tab windows to screen casting give you everything you could ever need.

  • Everything in Standard
  • Screen Casting
  • Tab Windows
  • Web App Installation
  • Performance Monitoring
Developer

everything in Plus, along with tools for building and debugging. perfect for web developers and power users.

  • Everything in Standard
  • DevTools
  • Source Code Viewer
  • Advanced Settings
  • Task Management
Barebones
a simple, easy-to-use, and minimal experience without the complexity — a clean slate for users who want to pick and choose every single addon themselves, or simply want a absolutley-no-frills browsing experience.
  • Basic Tabs
  • Basic Navigation (Back/Forward/Refresh)
  • Strictly-Necessary Settings
  • Faster Experience without Unnecessary Complications
  • And nothing more.
Custom
anything you want. choose your own addons during setup, mix and match features, or even start with a preset and customize it further. the choice is yours, and every choice is reversible.
  • Full Osmium Addon Store to choose from
  • The feature I've been dreaming of...
  • This one I've always wanted...
  • My Dream Experience
  • And so much more...