Zero-Knowledge Encryption

Your secrets,
your control.

A secure cross-platform password manager for Windows and Linux, with AES-256-GCM encryption and 15-language support. Store passwords, API keys, SSH keys, and more — all locally on your device.

Download Free View Source
Windows 10/11
Ubuntu / Debian
AES-256-GCM
Zero Knowledge
100% Offline
KeyNest KeyNest
Unlocked
GitHub
github.com
OpenAI API
Production
PostgreSQL Prod
db.example.com

Everything you need to stay secure

KeyNest is packed with features to keep your sensitive data safe and organized.

Military-Grade Encryption

AES-256-GCM with Argon2id key derivation. Your data is encrypted with the same standards used by governments.

10 Secret Types

Passwords, API keys, SSH keys, certificates, connection strings, credit cards, and more — each with specialized fields.

15 Languages

Full internationalization with English, Spanish, Chinese, Arabic (RTL), French, German, Japanese, and 8 more languages.

100% Offline

Your vault never leaves your device. No cloud sync, no third-party servers, no subscriptions.

Auto-Lock

Vault automatically locks after 5 minutes of inactivity. Clipboard clears after 20 seconds.

Backup & Export

One-click backups with automatic safety backups. Export encrypted vaults for secure sharing.

Built for developers

More than just passwords. Store all your sensitive credentials with specialized fields.

Passwords
API Keys
Connections
SSH Keys
Certificates
Licenses
WiFi
Cards
Secure Notes
Env Vars

Security you can trust

KeyNest uses a defense-in-depth approach with multiple layers of encryption to protect your data.

Zero-Knowledge Architecture

Your master password is never stored. We can't access your data — only you can.

Argon2id Key Derivation

Memory-hard algorithm (32MB, 3 iterations) resistant to GPU and ASIC attacks.

Per-Field Encryption

Each field encrypted separately with unique nonces and authentication tags.

Memory Protection

Keys cleared from memory on lock. No sensitive data ever logged.

MASTER PASSWORD
Never Stored
KEY DERIVATION
Argon2id (32MB, 3 iter)
DATA ENCRYPTION KEY
AES-256-GCM Wrapped
YOUR SECRETS
Per-Field AES-256-GCM + AAD

How we compare

See how KeyNest stacks up against other popular password managers.

Feature KeyNest KeePass Bitwarden 1Password
Price Free Free Free / $10/yr $36/yr
Open Source
Local Storage Optional
Native Apps Ports
Secret Types 10 Types Basic Basic Basic
Modern UI
Key Derivation Argon2id AES-KDF PBKDF2 PBKDF2

Ready to take control?

Free for Windows 10/11 and Ubuntu/Debian. No account required, no subscription needed.

Windows 10/11 (x64)

MSIX
Recommended · Modern installer · sideload or Store
MSI
Traditional installer · Start Menu & Desktop shortcuts
Portable EXE
Single self-contained file · no install

Linux (x64)

.deb (Ubuntu / Debian)
Native desktop app · Photino + WebKitGTK · Ubuntu 22.04 / 24.04
Snap (any Linux)
snap install keynest · auto-updates · strict confinement

Cross-platform · Windows + Linux

The Windows packages ship the MAUI Blazor Hybrid desktop app. The Linux .deb ships KeyNest.Linux, a native Photino window over an in-process Blazor host (no browser, no exposed network port). macOS, Android, and iOS support are planned.

Available in 15 languages | English • 中文 • Español • हिन्दी • العربية • Português • Français • 日本語 • and more
View on GitHub All Releases Documentation