Built-in shield
About 113k EasyList and EasyPrivacy network rules, with a per-site shield toggle.
Preview Privacy browser
Version 0.4.1 (preview build (tested on Windows 11 x64; ARM64 not yet tested))
Mattimeo Browser
Chrome-like browsing, with trackers blocked by default.
A Chromium-based Windows browser (via WebView2) with a built-in shield that blocks ads and trackers using EasyList and EasyPrivacy, and has no telemetry.
- Built-in tracker blocking
- No telemetry
- x64 + ARM64
- Signed auto-updates
What it does
Everything you expect from a modern browser, without the tracking.
Privacy controls
Toggles for third-party cookies, fingerprinting and WebRTC.
History and sessions
Local history (Ctrl+H), restores your tabs, and Ctrl+Shift+T reopens closed tabs.
Bookmarks
Folders, a manager, and import from Chrome, Edge, Brave or HTML files.
Verified updates
Checks the SHA-256 and the Authenticode signer before installing.
Private windows
Ctrl+Shift+N opens an in-memory private window. No history, cookies, cache or downloads list are kept, and the private profile is cleared when the last private window closes.
Follows your Windows theme
normal windows follow Windows light/dark mode and your accent color live, including the title bar. Private windows use their own dark violet frame.
Your search engine
DuckDuckGo by default. Brave, Startpage or Google are also available.
HTTPS-Only and clean links
Upgrades connections to HTTPS, strips tracking parameters from links, hides ad leftovers on pages, and can clear cookies on exit.
Smart address bar
Suggestions from your own history and bookmarks, computed on your PC. Nothing you type is sent anywhere until you press Enter.
See it
Real captures from development builds.
How it works
- Install. Signed installer for x64 and ARM64.
- Browse. The shield is on by default.
- Tune. Turn the shield off per site, or adjust privacy toggles in Settings.
Questions
Is it based on Chrome?
It uses the Chromium engine through Microsoft Edge WebView2.
Does it send usage data?
No. Anonymous reports exist only as an opt-in and are off by default.
Does private mode hide me from my ISP?
No. Private windows don't save anything on your PC, but your network or ISP can still see your traffic. The shield and fingerprint protection stay on in private windows.
Download Mattimeo Browser 0.4.1
Preview build Version 0.4.1 is a preview build (tested on Windows 11 x64; ARM64 not yet tested). Keep another browser installed while you try it.
| Package | Size | SHA-256 | Download |
|---|---|---|---|
| Windows Installer (MSI) · x64 Recommended · Intel/AMD PCs · uninstall from Apps & Features | 68 MB | defa551f21400329040769e42f2c1973ebfa1111c5b8de023cfedbb029a6fb02 |
Download |
| Windows Installer (MSI) · ARM64 Recommended · Snapdragon/ARM PCs | 64 MB | 46eccdbd6af587e8fd6c0947f73b69089909f46a062a000ab0518ff4152bf587 |
Download |
| Setup.exe (alternative) One installer for x64 and ARM64 | 133 MB | 873902efb202db4e8173082c855f2b4c825125a9a95eccecdfed64e95300d3b2 |
Download |
| Portable x64 No install · unzip and run | 69 MB | 679b87aa42887f3768f1406268be863f313b2044699d50acace3009095cc57a4 |
Download |
| Portable ARM64 No install · unzip and run | 65 MB | 2cbb3cde38284cecd8a8537b5dd346133b69c42cfe8892f898436993f77885d0 |
Download |
Download MSI for x64 (68 MB) MSI for ARM64 setup.exe
The MSI installs for all users and appears in Settings › Apps for clean uninstall; your browsing data in your user profile is kept unless you remove it. IT admins: msiexec /i MattimeoBrowser-0.4.1-x64.msi /qn. Installing the MSI replaces an existing setup.exe install. All checksums: SHA256SUMS. The installer and app are Authenticode code-signed, so Windows shows the verified publisher when you run them.
Mobile versions
- iPhone & iPadPhone and tablet layoutsComing soon
- AndroidPhones, tablets and dual-screenComing soon
Not available yet. No app store listings exist, so there's nothing to download for mobile today.
New in 0.4.1
- One copy per PC: the MSI and setup.exe recognize each other and upgrade the existing install in place, with one entry in Settings › Apps
- Built-in updates install the matching package and go straight to the newest version
- Secure DNS now really uses your chosen provider (checked with on.quad9.net)
- New About screen with the animated mascot
Already using Mattimeo Browser?
Run the new MSI (or setup.exe) to upgrade in place; settings and history are kept. Built-in update checks offer new versions automatically once they're published to the update channel, and every update is checked against its SHA-256 hash and code signature before it installs.
Free preview now, paid version later
Not yet for sale
Checkout is not live yet. Buy buttons are placeholders until a tracker-free checkout is added.