Encrypted · offline · no account
Record all of life. Keep it yours.
Arcalox is a free, open place for your notes, secrets, and moments. Encrypted on your device the second you save, with no account, no servers, and no way for anyone else, including us, to read a word of it.
No install, no sign-up. Encrypted in your browser. Read the source.
Encrypted and offline by design
What Arcalox is
One private vault for everything that matters
Notes, passwords and secrets, photos, video and voice, drawings, documents. All of it in one place, all of it encrypted, all of it on a device you hold.
Notes and secrets
A live markdown editor with links, tags, search, and math. Passwords and 2FA codes live in the same always-encrypted vault.See all features →
Capture and draw
Voice, photo, and video notes, plus a drawing canvas. Photos are stripped of location and metadata before they are encrypted.See all features →
Coercion defenses
A duress passphrase opens a realistic decoy vault and can wipe the key to your real data. Nothing like it in a mainstream notes app.How protection works →
Encrypted, always
AES-256-GCM at rest, derived through Argon2id. No account, no telemetry, no outbound network calls. Encryption is never a toggle.Read the security model →
Nothing to install
Try Arcalox in your browser
The web app is the encrypted tier: your notes are end-to-end encrypted in the browser and stay on your device. Open it, set a passphrase, and start writing. When you want the coercion defenses, install the app.
Who it is for
Built for people whose records could be used against them
Arcalox is a private notebook for anyone, and it is designed first for the people who cannot afford a leak: journalists and their sources, activists and organizers, survivors, and everyone who simply wants their notes to stay their own.
Open source
Every line is public on Codeberg under AGPL-3.0. Read it, build it yourself, or fork it.
No telemetry, ever
No analytics, no crash reporting to us, no tracking library. The app makes no outbound network calls.
Yours to keep
No account to lock, no company that can take it back. A tool given permanently, not a service.