This document provides a history of Psono, from its origins to the current version. Track the evolution of features, security improvements, and major milestones in Psono’s development as a leading open-source password manager.
Current Stable Version: v15.x (2025) | Developer: esaqa GmbH (Germany) | License: Apache 2.0
Psono emerged from the growing need for secure, self-hosted password management solutions. As organizations recognized the risks of cloud-based password managers and sought greater control over their sensitive data, Psono provided an open-source alternative with enterprise-grade security features.
| Year |
Milestone |
| 2017 |
Initial release, groups feature added |
| 2018 |
Admin client beta, Apache 2.0 license |
| 2019 |
Fileserver module released |
| 2020 |
Android app launched |
| 2021 |
iOS app released, shared 2FA |
| 2023 |
ARM64 architecture support |
| 2024 |
Passkey (FIDO2) support |
| 2025 |
ISO 27001 certification, Cure53 audit |
| Version |
Release Date |
Key Features |
Security |
| v15.1 |
Q4 2025 |
Performance improvements, bug fixes |
Security patches |
| v15.0 |
Q3 2025 |
Enhanced audit logging, UI improvements |
ISO 27001 certified |
| v14.x |
Q1-Q2 2025 |
Passkey refinements, mobile updates |
Cure53 audit (March 2025) |
- Performance optimizations for large deployments
- Improved database connection pooling
- Enhanced mobile app synchronization
- Bug fixes and stability improvements
- ISO 27001 Certification achieved (September 2025)
- Enhanced audit logging with SIEM integration
- Improved group management UI
- Advanced reporting capabilities
- Security hardening based on Cure53 findings
| Version |
Release Date |
Key Features |
Security |
| v14.x |
2024 |
Passkey support, mobile enhancements |
X41 audit |
- Passkey Support – FIDO2/WebAuthn authentication
- Improved autofill behavior in browser extensions
- Enhanced mobile app performance
- Security audit by X41 D-Sec GmbH (July 2024)
| Version |
Release Date |
Key Features |
Security |
| v13.x |
Late 2023 |
ARM64 support, performance improvements |
Trovent audit |
- ARM64 Architecture Support – Raspberry Pi, Apple Silicon, AWS Graviton
- Docker image optimization for ARM platforms
- Improved container resource management
- Security audit by Trovent (March 2023)
| Version |
Release Date |
Key Features |
Security |
| v12.x |
2022 |
Mobile app improvements, API enhancements |
Linkspirit audit |
- Major mobile app updates (iOS & Android)
- Enhanced API capabilities for automation
- Improved sharing workflows
- Security audit by Linkspirit (February 2022)
| Version |
Release Date |
Key Features |
| v11.x |
2021 |
iOS app, shared Google Authenticator |
- iOS App Released – Flutter-based, Apache 2.0 licensed
- Full feature parity with Android app
- Biometric authentication support
- Shared Google Authenticator – Team 2FA sharing
- Improved TOTP management
- Enhanced group administration
| Version |
Release Date |
Key Features |
| v9.x |
2020 |
Android app, mobile foundation |
- Android App Released – Flutter-based, Apache 2.0 licensed
- Mobile-optimized user interface
- Offline access capabilities
| Version |
Release Date |
Key Features |
| v8.x |
2019 |
Fileserver module |
- Psono Fileserver – Secure file exchange module
- Encrypted file storage and sharing
- Integration with password entries
| Version |
Release Date |
Key Features |
License |
| v1.2.0 |
Feb 2018 |
Python 3 only, Apache 2.0 |
Apache 2.0 |
| v1.1.x |
2018 |
Admin client beta, security features |
MIT → Apache 2.0 |
- License Change – Apache 2.0 (more permissive)
- Python 3 Only – Dropped Python 2 support
- Modernized codebase
- Improved dependency management
- Groups Feature – Team organization
- Enhanced sharing capabilities
- Improved permission management
- Admin Client (Beta) – Web-based administration
- User management interface
- Group administration tools
| Version |
Release Date |
Key Features |
| v1.1.x |
Late 2017 |
Groups, security improvements |
| v1.0.x |
Early 2017 |
Initial release |
- Core password management functionality
- Basic user authentication
- Simple sharing capabilities
- Self-hosted deployment
| Date |
Auditor |
Type |
Result |
Report |
| Mar 2025 |
Cure53 |
White-box pentest + source audit |
✅ All findings resolved |
PDF |
| Jul 2024 |
X41 D-Sec GmbH |
Cryptography audit |
✅ Passed |
Report |
| Mar 2023 |
Trovent |
Full penetration test |
✅ Passed |
Available on request |
| Feb 2022 |
Linkspirit |
Security assessment |
✅ Passed |
Available on request |
- Duration: 12 days
- Team: 5 security researchers
- Scope: Browser addons, backend API, source code
- Findings: 8 total (0 critical, 1 high, 3 medium, 4 low)
- Status: All findings fixed and verified
| Date |
Certification |
Issuing Body |
| Sep 2025 |
ISO 27001 |
Accredited certification body |
| Ongoing |
SOC 2 Type II aligned |
Internal controls |
Psono (esaqa GmbH) achieved ISO 27001 certification for information security management, demonstrating:
- Comprehensive security management system
- Risk assessment and treatment processes
- Continuous improvement commitment
- International security standards compliance
| Era |
Technology |
Improvement |
| 2017-2018 |
Basic AES |
Initial encryption |
| 2019-2020 |
PyNaCl integration |
Modern cryptography |
| 2021-2022 |
Enhanced key management |
Improved key derivation |
| 2023-2025 |
Multi-level encryption |
Client-side + E2E + TLS + Storage |
| Year |
Platform |
Notes |
| 2017 |
Web |
Initial release |
| 2018 |
Browser extensions |
Chrome, Firefox |
| 2020 |
Android |
Flutter-based |
| 2021 |
iOS |
Flutter-based |
| 2023 |
ARM64 |
Raspberry Pi, Apple Silicon |
| Year |
Feature |
Description |
| 2017 |
Password auth |
Basic authentication |
| 2018 |
2FA (TOTP) |
Google Authenticator support |
| 2021 |
Shared 2FA |
Team TOTP sharing |
| 2022 |
U2F/FIDO2 |
Hardware key support |
| 2024 |
Passkeys |
FIDO2/WebAuthn passwordless |
- Founded: 2017
- Location: Germany
- Focus: Open-source security software
- Product: Psono password manager
- Contact: support@psono.com
| Metric |
2020 |
2023 |
2025 |
| Downloads |
500K+ |
1.5M+ |
2M+ |
| GitHub Stars |
500+ |
1000+ |
1500+ |
| Discord Members |
100+ |
500+ |
1000+ |
| Component |
2017 |
2020 |
2025 |
| Language |
Python 2/3 |
Python 3 |
Python 3.10+ |
| Framework |
Django |
Django |
Django 4.x |
| Database |
PostgreSQL |
PostgreSQL |
PostgreSQL 15 |
| Cache |
Basic |
Redis |
Redis 7 |
| Component |
2017 |
2020 |
2025 |
| Web |
JavaScript |
Modern JS |
TypeScript |
| Mobile |
N/A |
Flutter |
Flutter 3.x |
| Desktop |
N/A |
Native |
Native + Electron |
| Component |
2017 |
2020 |
2025 |
| Deployment |
Manual |
Docker |
Docker + K8s |
| CI/CD |
Basic |
GitLab CI |
GitLab CI + automated |
| Monitoring |
Basic logs |
Enhanced |
Full observability |
| Feature |
Status |
Expected |
| Enhanced AI integration |
Planning |
2026 |
| Advanced secrets rotation |
In development |
Q1 2026 |
| Kubernetes operator |
Planning |
2026 |
| Enhanced mobile features |
Ongoing |
Continuous |
- Continued focus on security and compliance
- Expanded platform support
- Improved developer experience
- Enhanced enterprise features
- Stronger integration ecosystem
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