Local Vault – AES-256-GCM password manager in a single HTML file
One encrypted .vault file you carry anywhere with zero dependencies.

Air-gapped QR-code encryption, but paid tiers ($99+) for basic features existing tools offer.
Crypto users and paranoid security practitioners distrusting cloud and hardware wallets
Bitwarden · 1Password · Hardware wallets like Ledger
Paranoid Qrypto runs completely offline (air-gapped). You type your seed phrase on an offline device, and it encrypts it using Argon2id + AES-256-GCM. The encrypted file can be stored anywhere USB, cloud, printed as QR code without exposing your keys.
Why this was build: Hardware wallets cost $100-200 and are single points of failure * Cloud solutions require trusting a third party * Paper backups have no protection if found
Technical details: * Runs in browser with no server calls * All encryption happens locally * Open source tools on GitHub: integrity-auditor, airgap-bridges (BTC/ETH/XRP) * Three tiers: Essential ($99), Advanced ($199), Ultimate ($299)
Happy to answer questions.
One encrypted .vault file you carry anywhere with zero dependencies.
1Password replica built entirely by Claude Code to audit AI-generated security code.
dotenv encrypted with Argon2id + pre-commit hook, but HashiCorp Vault exists.
Solid local encryption but FileVault and Cryptomator already solve this.
Drop-in Slack alternative with verifiable crypto, but one-time secret sharing exists.
Spiritual successor to unmaintained Mini Diary with stronger crypto and modern stack.