Self-hosted
Self-hosted
Free
- Open source core
- Browser profiles for Chrome and Firefox (Windows, macOS, Linux)
- Profile updates via configuration files
- No accounts, no telemetry
- Full control over your setup
Pricing
Simple, honest pricing.
Free to self-host. One flat rate for the app. Custom for teams.
Plans
Early access
404+
$9 /month
- Tauri desktop app with GUI
- Automatic profile updates
- Core browser profiles (Chrome, Firefox on Windows / macOS / Linux)
- No accounts
- Open source, auditable
Get early access
Early access pricing. Subject to change.
Enterprise
Enterprise
Custom
- Everything in 404+
- Custom profile configuration
- Deployment support
- Compliance documentation
- Direct access to the developer
- Priority support via Signal / email
Services
Fingerprint Audit
We assess your organization's fingerprint exposure across commercial tracking and intelligence services. You receive a written report showing exactly what signals are leaking and actionable steps to address them.
Starting at $2,000.
Request an audit →FAQ
Common questions
What's the difference between 404 and a VPN?
A VPN masks your IP address. Browser fingerprinting ignores your IP entirely. It identifies you through the combination of signals your browser exposes: fonts, screen resolution, hardware concurrency, rendering behavior, and dozens more. 404 changes those signals so your browser looks like everyone else's. A VPN does not do this.
Do I need technical knowledge to use 404?
No. 404+ ships as a desktop app with a graphical interface. You select a profile, launch your browser from the app, and the fingerprint is handled automatically. No command line required.
What platforms does 404 support?
The 404+ app runs on Windows, macOS, and Linux. Supported browsers are Chrome and Firefox. Additional browsers are on the roadmap.
Is my data ever sent to your servers?
No. 404 runs entirely on your machine. Profile updates are downloaded as static files. There is no telemetry, no usage data, and no account required to run the app.
What is open source about 404?
The core browser configuration layer is open source so you can audit exactly what signals are changed and how. The update distribution and licensing layer is proprietary. The repository link is in the footer.
How does 404 make money if you aren't selling my data?
We make money when people pay us directly. That's it. If you self-host, we get nothing from you financially, and that's fine. There's no ad network, no data broker relationship, no hidden revenue stream. The business model is: you find 404 useful, you pay for the app. If you don't need the app, the self-hosted version is free and always will be.