Your Passwords.
Your Control.
Zero-knowledge encrypted password manager that keeps your data secure. Only you can decrypt your passwords - not even we can see them.
100% Free for local use. Optional paid sync.
Why NullKeep?
Built with security-first principles
Zero-Knowledge Encryption
Your data is encrypted before it leaves your device. We never see your master password or your data.
AES-256-GCM
Military-grade encryption protects every password. The same standard used by governments worldwide.
Open Architecture
Transparent security model. Your encryption keys are derived locally and never transmitted.
Auto-Fill & Capture
Automatically fills login forms and captures new credentials. Save time without compromising security.
Password Health
Get alerts for weak, reused, or old passwords. Keep your security posture strong.
Optional Cloud Sync
Sync across devices with Pro. Your data stays encrypted - we only store what we can't read.
How It Works
Security without complexity
Create Master Password
Choose a strong master password. This is the only password you need to remember.
Local Encryption
Your master password derives encryption keys locally. Keys never leave your device.
Save & Autofill
Save passwords securely and autofill them instantly when you need them.
If you forget your master password, your data cannot be recovered. This is by design - it ensures that only you can ever access your passwords.
Simple Pricing
Free forever for local use. Pay only if you need cloud sync.
Free
Forever
- Unlimited passwords
- AES-256-GCM encryption
- Auto-fill & capture
- Password generator
- Password health check
- Secure notes
- Import/Export
- Cloud sync
Pro
or $29.99/year (save 17%)
- Everything in Free
- Cloud sync across devices
- Unlimited devices
- Encrypted cloud backup
- Device management
- Email support
Frequently Asked Questions
What happens if I forget my master password?
Your data cannot be recovered. This is by design - zero-knowledge encryption means we never have access to your encryption keys. We recommend writing down your master password and storing it in a safe place.
Can NullKeep see my passwords?
No. Your passwords are encrypted on your device before they're stored or synced. We only ever see encrypted data that we cannot decrypt without your master password.
Is the free version really free forever?
Yes! Local password storage, encryption, autofill, and all core features are completely free with no limits. You only pay if you want cloud sync across devices.
What encryption does NullKeep use?
We use AES-256-GCM for data encryption and PBKDF2 with 600,000 iterations for key derivation. These are industry-standard algorithms used by security professionals worldwide.
Can I export my passwords?
Yes, you can export your passwords to JSON or CSV format at any time. Your data is yours - we never lock you in.
What browsers are supported?
Currently we support Chrome and Chromium-based browsers (Edge, Brave, Opera). Firefox support is coming soon.
Ready to secure your passwords?
Join thousands of users who trust NullKeep with their digital security.
Install NullKeep - It's Free