NestKey — Secure Password Vault

A lightweight, offline password vault built with pure JavaScript, HTML, and CSS. NestKey focuses on local-first security with no cloud storage, no telemetry, and full user control.

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NestKey — Secure Password Vault screenshot

Key Features

Local-Only Storage

All credentials are stored offline on your device. No cloud sync, no external servers.

AES-256 Encryption

All vault data is encrypted using industry-standard AES-256.

Master Password Lock

Secure your vault with a single master password.

Auto-Fill (Planned)

Future browser extension for seamless login workflows.

Engineering Notes

NestKey is intentionally simple and transparent, built with native web technologies for maximum auditability. Encryption is handled client-side, ensuring that sensitive data never leaves the user's machine. Cross-platform packaging will be added once OS tooling is ready.

Tech Stack

JavaScript HTML CSS

License MIT

Version 1.1.0

Last Updated Dec 2025

Platform Windows (current), Cross-platform planned

Roadmap

Core vault encryption

completed

Master password system

completed

UI polish and improved UX

in-progress

Browser extension for auto-fill

planned

Cross-platform packaging

planned