Get an insight into the inner-workings of a given website: uncover potential attack vectors, analyse server architecture, view security configurations, and learn what technologies a site is using.
Cost / License
- Free
- Open Source (MIT)
Application type
Platforms
- Online
- Self-Hosted
United Kingdom


End-to-end encrypted cloud storage using quantum-resistant cryptography prevents any third-party, including service administrators, from accessing confidential files.
Cost / License
- Free
- Open Source (GPL-3.0)
Application typeApplication types
Platforms
- Online
Germany
EU


+5
Privacy and security enhanced releases of Chromium for GrapheneOS. Vanadium provides the WebView and standard user-facing browser on GrapheneOS.
Cost / License
- Free
- Open Source
Application type
Platforms
- Android
Canada

Cost / License
- Free
- Open Source (Apache-2.0)
Application typeApplication types
Platforms
- Android
- Android Tablet
United States



Creates a self-contained HTML file bundling encrypted notes and attachments, decryptable locally in any modern browser, with password protection, no server, and supports offline use.
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Online
United States


+2
Cover Your Tracks is a research project designed to better uncover the tools and techniques of online trackers and test the efficacy of privacy add-ons.
Cost / License
- Free
- Open Source
Application type
Platforms
- Online
United States

Open-source SSO provider for self-hosted apps with passkey support, user invites, self-registration, strong privacy, admin ease, and local management.
Cost / License
- Free
- Open Source (AGPL-3.0)
Application type
Platforms
- Self-Hosted
- Docker
United States

Minimal Firewall is a portable Windows firewall frontend that alerts users to internet connections without requiring custom kernel modifications or disabling core isolation, striking a balance between TinyWall's security and SimpleWall's functionality.
United States


+3
A free in-depth website analyzer providing audits of security, performance, SEO, accessibility and other technical aspects. Available as a desktop application for Windows/macOS/Linux and as a CLI tool for advanced users and CI/CD processes. It also includes an offline web page exporter.
Czechia
EU


+9
Privacy-first PDF utility (Zero-Server Architecture). Merge, split, compress, and edit PDFs 100% locally on your device. No uploads, no servers, no tracking.
Cost / License
- Free
- Open Source (AGPL-3.0)
Application type
Platforms
- Android
- F-Droid
- Online


Verify that apps you installed come from the right source. Fork of AppVerifier including user submissions
Cost / License
- Free
- Open Source (MIT)
Platforms
- Online
- Android
- Obtainium
- F-Droid
United States



Wazuh is a free and open source platform used for threat prevention, detection, and response. It is capable of protecting workloads across on-premises, virtualized, containerized, and cloud-based environments.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- Online
- Self-Hosted



This is a fork of the original (and discontinued) app, which is still looking for maintainers. Please consider to apply to keep this app maintained !
Cost / License
- Free
- Open Source (AGPL-3.0)
Application type
Platforms
- Android
- F-Droid


reCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online
United States


Cost / License
- Free
- Open Source (MIT)
Platforms
- Online
Auditor is an app which leverages hardware security features to provide device integrity monitoring for supported devices. Currently, it only works with GrapheneOS and the device's stock operating system.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Android
Canada



Burp Suite is an integrated platform for performing security testing of web applications. Its various tools work seamlessly together to support the entire testing process, from initial mapping and analysis of an application's attack surface, through to finding and exploiting...
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Platforms
- Mac
- Windows
- Linux
- Flathub
- Flatpak
United Kingdom


AstraCrypt - is a free, powerful and open-source encryption app that has everything you need to keep your data safe and secure.
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Android
- F-Droid
Ukraine


Protect your applications with Single Sign-On and 2 Factor. Authelia is an open-source full-featured authentication server available on Github.
Cost / License
- Free
- Open Source (Apache-2.0)
Application type
Platforms
- Self-Hosted
- Kubernetes
- Docker
France
EU



The GrapheneOS App Store is the official application repository for the GrapheneOS mobile operating system, a privacy and security-focused Android-based OS. This app store is designed to complement GrapheneOS's core principles of enhanced user privacy, robust security, and...
Prosopo Procaptcha redefines user verification with a unique approach that emphasizes privacy and security. It's a pioneering solution designed to offer an alternative to conventional CAPTCHA systems that often compromise user privacy.
Cost / License
- Freemium
- Open Source (Apache-2.0)
Application typeApplication types
Platforms
- Online
- Software as a Service (SaaS)
- Wordpress
United Kingdom


+3
Cost / License
- Free
- Open Source (AGPL-3.0)
Application typeApplication types
Platforms
- Self-Hosted
Secure and Easy Self-hosted platform. Take control of your data and privacy without sacrificing security and stability (Authentication, anti-DDOS, anti-bot).
Cost / License
- Free
- Open Source
Application typeApplication types
Platforms
- UNIX Web Browser
- Software as a Service (SaaS)


+3
Security Enhanced Linux (SELinux) is a role-based access control solution, developed by the US spying agency NSA and Red Hat, for internal and general use.
Cost / License
- Free
- Open Source
Platforms
- Linux

















































