RHETRA / Downloads
Try sovereignty on your own machine — free.
The fastest way to understand RHETRA is to feel it: install the OSI Shield and watch it catch a credit-card number before it reaches ChatGPT. Nothing leaves your device — that's not a promise, it's the architecture.
OSI Shield — Community v1.2.0 · Chrome + Firefox
On-device PII protection: detects and masks credit cards, IBAN, SSN, API keys, names and addresses before your prompt reaches any LLM. Fail-safe — if the scanner errors, it blocks. ~3 MB.
HERMES Browser — Community v0.1.0 · Windows 10/11
A sovereign browser with the Shield built in, plus local AI. Air-gap capable: works with zero cloud connectivity. ~480 MB installer.
Get your downloads
Community is free. We ask for business contact details once — you get the downloads immediately plus security-update notifications. No newsletter spam, no resale, privacy policy · Legal Notice.
Frequently asked questions
Is the Community Edition really free?
Yes — free for individuals and teams. Your business contact details are the whole price: we use them for update notifications only. Pro, Enterprise and Sovereign editions add managed policy, fleet control and KRONOS gateway integration.
Does the Shield send my data anywhere?
No. Detection runs entirely on-device (zero-egress). If the scanner fails, it blocks — fail-safe, never fail-open.
Community vs Pro vs Enterprise vs Sovereign?
Community = free, one user, on-device. Pro = custom rules + priority updates. Enterprise = managed policy for teams. Sovereign = government/regulated: KRONOS gateway with post-quantum signed audit. Talk to us about Pro and up →
What the Shield does for one browser, KRONOS does for every AI call in your stack — classified, enforced and post-quantum signed. Request a demo or 30-day pilot →