MoltBrowser.
The browser
that thinks.
A private AI browser that’s actually yours. On-device AI, Tor-grade privacy, and built-in ad-blocking — free forever, fully open source, on every OS. No cloud. No tracking. No catch.
Download.
macOS
Your OSMetal GPU-accelerated on-device inference. Universal .dmg for M-series Macs.
↓ Apple Silicon (.dmg)Linux
Your OSEvery distro covered — Ubuntu, Debian, Fedora, openSUSE, Arch.
.rpm (Fedora / openSUSE) .tar.gz (Arch / other) ↓ .deb (Ubuntu / Debian)Windows
Your OSPortable build — unzip and run. Vulkan GPU on supported hardware.
↓ .zip (Windows x64)All builds are free and fully open source — inspect every line, fork it, contribute. Browse every version on the GitHub releases page.
Built different.
Browse like a ghost.
One click onion-routes your traffic over the Tor network — and you can pick your exit country right from the menu bar to reach geo-restricted sites and mask your location. The same privacy technique journalists and activists trust, built in. No setup, no separate app.
No ads. No trackers. No cookie pop-ups.
MoltShield blocks ads, trackers, and even YouTube ads before they load using industry-standard EasyList / uBlock filters — and auto-dismisses those endless cookie-consent banners. The web, clean and quiet, out of the box. No extensions to install.
An AI that lives on your device — not the cloud.
Chat with a powerful AI right inside your browser — in a side panel, the address bar, or over any page. Run open models like Llama, Mistral, Phi and Qwen locally, GPU-accelerated to 30+ tokens/sec on Apple Silicon, so your conversations never leave your computer.
Invisible to trackers.
Websites secretly “fingerprint” your device — your screen, graphics card, even your audio — to follow you across the web. MoltBrowser scrambles all of it and masks your IP address, so you blend into the crowd.
Let AI do the boring clicking.
Tell MoltBrowser what to do and its agent does it — clicking, scrolling, navigating, filling forms. Automate repetitive tasks and schedule them to run on their own. Your browser, on autopilot.
A browser that remembers — privately.
MoltBrowser builds a personal memory of what you’ve read and done, stored entirely on your device. Ask “what was that article about X last week?” and it knows — without any of it ever touching a server.
AI that understands the page you’re on.
Summarize a long article, explain a block of code, pull data out of a table, or translate the whole page — all with one click. The AI reads the page so you don’t have to.
Bring your extensions with you.
Full Chrome extension compatibility — your favorite extensions run right alongside MoltBrowser’s native AI and privacy features. Switch without leaving your toolkit behind.
Your AI chats, always yours.
Full conversation history with search, plus one-click export and import to JSON. Stored on your device — take your data anywhere, anytime, or wipe it in a click.
How it compares.
| MoltBrowser | Chrome | Safari | Brave | Comet | Atlas | Dia | |
|---|---|---|---|---|---|---|---|
| On-device AI default, bundled | ✓ | ~Nano only; Gemini = cloud | ~on-device + Apple PCC | ~only via your Ollama | ✕cloud | ✕cloud | ✕cloud |
| Prompts never leave device | ✓ | ✕ | ~PCC for heavy tasks | ✕ | ✕ | ✕ | ✕ |
| AI works offline | ✓ | ~Nano only | ~on-device parts | ✕ | ✕ | ✕ | ✕ |
| AI agents / automation | ✓local | ~limited | ✕ | ~ | ✓cloud | ✓cloud | ~light |
| Ad / tracker blocking built-in | ✓ | ✕ad-funded | ~via extensions | ✓ | ✓ | ✕ | ✓ |
| Anti-fingerprinting | ✓ | ✕ | ✓ | ✓ | ~ | ✕ | ~ |
| Tor / onion routing | ✓ | ✕ | ~Private Relay, no Tor | ✓basic | ✕ | ✕ | ✕ |
| Exit-country selector (“VPN”) | ✓unique | ✕ | ✕Relay can’t pick region | ✕ | ✕ | ✕ | ✕ |
| Open source | ✓GPL-3 | ~Chromium only | ✕ | ~partial | ✕ | ✕ | ✕ |
| No data business / ad-profiling | ✓ | ✕ad-driven model | ✓strong | ✓ | ✕ad-profiling | ~ | ~ |
| Cross-platform (Win/Mac/Linux) | ✓ | ✓ | ✕Apple-only | ✓ | ✓ | ✓ | ~ |
| Cost | Free forever | Free · ad-supported | Free (Apple HW) | Free + paid | Free (ad-funded) | ChatGPT tiers | Free + paid |
The moat, in one line.
Private AI that’s actually yours — on every OS, end to end, no cloud, no catch.
Only MoltBrowser combines fully on-device AI + built-in ad / tracker / fingerprint blocking + Tor with a country selector + local agents + open source + cross-platform + zero data business in one product. Chrome’s revenue is ad-funded, so native ad-blocking and a no-tracking default run counter to its core business. Comet is ad-supported and builds user profiles. Atlas and Dia are cloud-AI by design. Brave requires you to bring your own local model (Ollama). And Safari is Apple-only and closed-source, with no Tor and no automation agents.
Sources
Chrome built-in AI (Gemini Nano) ·
Apple Private Cloud Compute ·
Apple Intelligence ·
Apple iCloud Private Relay ·
Brave Leo — bring your own model ·
The Tor Project
Comparison reflects publicly documented capabilities as of June 2026. Competitor features change frequently — corrections welcome at [email protected].
How it works.
MoltBrowser is a web-standard browser with a new layer of intelligence threaded through every primitive — the omnibox, the tab manager, the page renderer, the network stack. The browser doesn't just render pages anymore. It understands them.
A compact local model is compiled into the binary alongside a queryable local memory store. Your browsing history isn't a list of links — it's a memory the browser can reason over. "Remind me what I was reading about Patagonia last week" works because the browser already knows.
For heavy lifting the browser routes to cloud models, but the local LLM handles the 70% of tasks that don't need a frontier model — with no roundtrip latency and no data leaving your device.
Every line of this lives on GitHub. The repo is the product. Fork it, build it, ship it — we'll merge your PR.
Free, private, and yours.
The way browsing should be.
MoltBrowser is open source and free forever — one mission: a safe, private, AI-powered browser for everyone. Download it, read every line, make it better.