The best open source alternative to Psono is Vaultwarden. If that doesn't suit you, we've compiled a ranked list of other open source Psono alternatives to help you find a suitable replacement. Other interesting open source alternatives to Psono are: KeePassXC, Bitwarden, Passbolt, and Padloc.
Psono alternatives are mainly Password Managers but may also be Secure & Encrypted Notes. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Psono.
Unofficial Bitwarden-compatible server written in Rust, built for self-hosting on low-resource hardware without sacrificing client compatibility.

Vaultwarden is an unofficial, community-built server that speaks the Bitwarden client API. It lets you run your own password vault on hardware that would struggle with the official server, including a Raspberry Pi or a small VPS. All the standard Bitwarden apps, browser extensions, and mobile clients connect to it without modification.
The appeal is straightforward: you keep full control of your credentials, attachments, and vault data, and you don't need beefy infrastructure to do it. Written in Rust, it's lightweight by design.
Key capabilities include:
It ships as a container image for Docker and Podman, making deployment straightforward on any machine that supports containers. A built-in web vault is bundled, so you get a browser-based interface without needing to set anything else up. Running it behind a reverse proxy with HTTPS is the recommended setup, since the web vault requires a secure context for features like the clipboard API.
Vaultwarden is aimed at individuals, families, and small organizations who want the Bitwarden experience without relying on the cloud service. It's not affiliated with Bitwarden, Inc., though one maintainer is a Bitwarden employee contributing independently. Bugs and issues should go to the Vaultwarden project directly, not Bitwarden's official support.
KeePassXC is an open-source password manager that securely stores and manages sensitive information across Windows, macOS, and Linux.

KeePassXC is a modern, secure, and open-source password manager designed for users with high demands for personal data security. It offers a robust solution for storing and managing sensitive information like usernames, passwords, URLs, attachments, and notes.
Key features:
KeePassXC stands out for its commitment to user privacy and data control. It offers a comprehensive solution for password management without relying on cloud services, advertisements, or tracking mechanisms. The software is actively maintained by a dedicated team, with regular updates introducing new features and security enhancements.
Getting started with KeePassXC is straightforward. Users can download the application from the official website, with installation guides available for different operating systems. The project provides extensive documentation, including a Getting Started Guide and a detailed User Guide, to help users make the most of the software's features.
For developers and security enthusiasts, KeePassXC's open-source nature invites code inspection, contributions, and community involvement, fostering a transparent and collaborative approach to password management.
Bitwarden is an open source password manager that securely stores, shares, and autofills passwords across unlimited devices.

Bitwarden is a trusted open source password manager that helps individuals and businesses securely store, share, and manage sensitive data like passwords, passkeys, and credit card information.
Key features include:
Bitwarden offers both personal and business plans:
Personal:
Business:
With its focus on security, ease of use, and transparent open source model, Bitwarden is a top choice for securely managing passwords and sensitive data across devices.
Open source password manager focused on security, collaboration and privacy for organizations

Passbolt 4.9 brings significant improvements to performance and search efficiency:
Key benefits:
Passbolt continues to focus on being a security-first, open source password manager built for team collaboration. It offers:
As an EU-based company, Passbolt also emphasizes privacy compliance and data protection.
Open-source password manager with end-to-end encryption for passwords, credit cards, notes, and documents. Cross-platform sync with secure sharing capabilities.

Padloc is a comprehensive security solution that goes beyond traditional password management. This open-source platform provides end-to-end encryption for all your sensitive data, ensuring complete privacy and security.
Key Features:
Security & Trust: Padloc has been independently audited by three different security expert groups, providing additional assurance of its reliability. The end-to-end encryption means that even Padloc cannot access your data - only you hold the keys.
Perfect for personal use, families, teams, and businesses looking for a trustworthy solution to manage and share sensitive information securely across all devices.
Collaborative password manager with folder-level access control, AES-256-GCM encryption, governance tools, and Linux password rotation, runs on your own servers.

Teampass is a self-hosted password manager for teams, built for organizations that can't afford to hand their credentials to a third-party cloud. It's been maintained since 2009, runs on Docker or bare metal, and every security and governance feature ships in the free, GPL-3.0 server.
The access model centers on a folder tree. Roles carry preset rights, per-user overrides are available, and the same rules apply in the web interface and through the API. Personal folders are decryptable only by their owner and a designated recovery account.
Encryption is authenticated AES-256-GCM with random IVs, per-secret salts, 256-bit object keys, PBKDF2 at 600,000 iterations, and HKDF-SHA256 key derivation. Tampering is detected rather than silently decrypted. Existing vaults migrate lazily on first read, with no maintenance window required.
Key capabilities include:
Teampass has been validated against GDPR, ISO 27001, and ISO 9001 requirements by real organizations. It's a practical fit for IT teams managing thousands of accounts, small charities that need internal control without cloud exposure, and regulated businesses that need audit evidence on demand.
The server is free with no seat limits. A paid browser extension (from €49/year) adds autofill, password capture, and domain matching across Chrome, Firefox, and Edge. Unlike tools such as Passbolt, there's no feature-gated enterprise edition, everything in the server is available to everyone running it.
Open-source password manager with peer-to-peer syncing, local storage, and end-to-end encryption. No cloud servers, complete privacy control across devices.

Complete control over your passwords with zero cloud dependency. PearPass is an open-source password manager that stores credentials exclusively on your devices, eliminating server vulnerabilities and maximizing privacy.
Key benefits include:
Perfect for privacy-conscious users who want enterprise-grade security without surrendering data control. The open-source architecture ensures transparency and customization while maintaining the highest security standards through proven cryptographic methods.
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