
1Password
Password manager to secure and autofill logins and sensitive info
Discover top open-source software, updated regularly with real-world adoption signals.

Stateless password manager—no vault, no sync required
Generate strong, deterministic passwords from a master password. No encrypted vault to sync or backup—your passwords are computed on-demand, anywhere.

LessPass is a stateless password manager that eliminates the need for encrypted vaults and synchronization. Instead of storing passwords, it generates them deterministically using your master password, site domain, and login. The same inputs always produce the same password, so you can access your credentials on any device without syncing files or trusting cloud storage.
LessPass is designed for privacy-conscious users, developers, and anyone tired of managing encrypted databases across devices. It's available as browser extensions (Chrome, Firefox), a command-line tool (Python), mobile apps (iOS, Android, F-Droid), and a web interface.
The core password generation works entirely offline and client-side. An optional LessPass server enables storing password profiles (site/login combinations) for convenience, but it's not required. New users wanting connected features must self-host their own server; public registration is closed to existing users only. The project is licensed under GPL-3.0 and inspired by the original MasterPassword concept.
When teams consider LessPass, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Cross-Device Access Without Sync
Generate identical passwords on your laptop, phone, and work computer using only your master password—no files to transfer or cloud accounts to manage.
Offline Password Generation
Compute strong passwords in air-gapped environments or during travel without internet access, ensuring continuity and security.
Self-Hosted Profile Storage
Deploy your own LessPass server to store site/login combinations for convenience while retaining full control over your data.
CLI Automation for Developers
Integrate LessPass CLI into scripts and workflows to generate passwords programmatically without GUI dependencies.
LessPass uses a cryptographic algorithm to derive passwords from your master password, site domain, and login. The same inputs always produce the same output, so no storage is needed.
There is no recovery mechanism. Since passwords are derived rather than stored, losing your master password means you cannot regenerate your passwords.
Yes. The core password generation works entirely offline. The optional server only stores site/login profiles for convenience; it never stores actual passwords.
New registrations are closed. Existing users retain access, but new users must self-host their own server to use connected features.
You can adjust generation parameters (e.g., increment a counter or modify the login field) to produce a new password for that site while keeping others unchanged.
Project at a glance
ActiveLast synced 4 days ago