Privacy Library

Check whether an email address appears in known data breaches.

Monitor email addresses for exposure in known data breaches.

Independent educational resources about privacy tools and practices.

Practical guides for protecting communications and personal information online.

Interactive guidance for improving personal digital security and privacy.

Community project that summarizes and rates website terms and privacy practices.

Search engine focused on reducing tracking and profiling.

Privacy-focused search engine that provides search results without personal profiling.

Independent search engine designed with privacy-focused features.

European search engine emphasizing privacy and reduced user tracking.

Encrypted email service designed around privacy and secure communications.

Encrypted email and calendar service with privacy-focused infrastructure.

Privacy-oriented email, calendar and cloud office service.

Email alias service for hiding a real email address from websites and services.

Open-source email forwarding and alias platform for protecting email addresses.

Mozilla service for creating email masks that forward messages to a real inbox.

End-to-end encrypted messaging and calling application.

Privacy-focused messenger designed to reduce metadata exposure.

Secure messaging client built on the decentralized Matrix protocol.

Peer-to-peer messaging app designed for private communication and resilient connectivity.

VPN service from Proton with privacy-focused policies and applications.

VPN service designed to minimize account data and protect network privacy.

Privacy-oriented VPN service with open-source applications and transparent policies.

VPN and privacy service with desktop, mobile and browser tools.

Network and browser project for reducing tracking and improving online anonymity.

Web browser with built-in tracker blocking and privacy protections.

Open-source web browser with configurable privacy and tracking protection features.

Firefox-based browser configured with stronger privacy and security defaults.

Open-source content blocker for reducing ads, trackers and unwanted web requests.

EFF browser extension that learns to block invisible trackers across websites.

Browser extension that removes common tracking parameters from URLs.

Ad and tracker blocking tools for browsers, devices and networks.

Open-source password manager for storing and syncing credentials securely.

Password manager for securely storing credentials, passkeys and sensitive information.

Offline open-source password manager compatible with KeePass database formats.

Password manager with aliases and passkey support from Proton.

Authentication app for generating two-factor verification codes.

Open-source authenticator for generating and syncing two-factor authentication codes.

Hardware security key provider supporting strong phishing-resistant authentication.

Analyze files, URLs, domains and IP addresses using multiple security engines and datasets.

Website scanning service for inspecting page behavior, requests and infrastructure.

Browser-based tools for safely inspecting links and web content in isolated sessions.

Platform that analyzes Android applications for embedded trackers and permissions.

Research platform examining privacy and data practices in mobile applications.

EFF test showing how browser tracking protection and fingerprinting resistance perform.

Collection of tests showing information a browser may expose to websites.

Simple tests for checking which DNS servers are visible from an internet connection.

Browser-based checks for IP, DNS, WebRTC and other connection information.

Public insights into internet traffic, security, routing and technology trends.

Resource focused on helping people understand unwanted email exposure and data sharing.

Encrypted DNS with configurable privacy and security controls.

Public DNS resolver focused on security and privacy.

Public DNS resolver with privacy-focused policies.

DNS service for blocking ads, trackers and malicious domains.

European public DNS resolver with security and privacy protections.

Open-source client-side encryption for cloud files.

Open-source disk encryption for volumes and storage devices.

Small open-source file encryption utility.

Modern command-line file encryption tool.

Browser-based open-source file encryption that works locally.

Encrypted cloud storage for private files and sharing.

End-to-end encrypted cloud storage and file sharing.

End-to-end encrypted cloud storage across devices.

End-to-end encrypted photo storage and backup.

Peer-to-peer file synchronization without a central cloud.

Secure file sharing and hosting over Tor.

Local-network file sharing across major platforms.

Browser-based peer-to-peer file sharing.

Securely transfer files and data between computers.

Encrypted temporary file sharing service.

Open protocol for decentralized encrypted messaging.

Private messenger designed without persistent user identifiers.

Encrypted messenger designed to minimize personal data collection.

Distributed messaging, voice and video communication platform.

Open-source video conferencing that can be self-hosted.

Self-hostable open-source low-latency voice chat.

Encrypted collaboration for messaging, calls and files.

Open-source Matrix-based voice and video calling.

Browser designed to reduce tracking and fingerprinting.

Browser that routes traffic through Tor and reduces tracking.

Chromium project reducing Google service integration.

Chromium-based Android browser with privacy enhancements.

Firefox configuration for privacy and security hardening.

Firefox extension designed to reduce fingerprinting techniques.

Automatically removes cookies and site data after tabs close.

Separates browsing identities into isolated Firefox containers.

Locally serves common resources to reduce some third-party requests.

Privacy tools for blocking online tracking technologies.

Community filter list for blocking web tracking requests.

Domain blocklists for DNS-level ad and tracker filtering.

Open-source comparison of browser privacy protections.

Tests browser fingerprint uniqueness and tracking characteristics.

Shows browser and device information exposed to websites.

Demonstrates information websites can learn from a browser.

Tests browser tracking protection and fingerprint resistance.

Reports trackers and permissions found in Android applications.

Catalog of free and open-source Android applications.

Android app updater that can fetch releases directly from project sources.

Open-source alternative client for accessing Google Play listings.

Open-source Android tool for reviewing application permissions.

Portable operating system designed to route internet traffic through Tor.

Security-focused desktop operating system that isolates activities into separate compartments.

Privacy and security focused mobile operating system based on Android.

Android-based mobile operating system emphasizing privacy and usability.

Operating system designed for anonymity using Tor and virtual machine isolation.

Security-hardened Linux distribution focused on defensive desktop computing.

Android application that routes supported app traffic through the Tor network.

Pluggable transport that helps users connect to Tor when direct access is blocked.

Tool for measuring internet censorship and network interference.

VPN service operated by Riseup for privacy-oriented internet access.

Privacy-oriented VPN service provided by the Calyx Institute.

Open-source privacy and security applications for mobile devices.

Android app for monitoring and controlling tracking requests made by applications.

Android firewall and DNS tool for controlling app network connections.

No-root Android firewall for controlling application internet access.

Android app inspection tool for identifying embedded trackers.

End-to-end encrypted collaborative office suite for documents, sheets and forms.

Open-source collaborative text editor that can be self-hosted.

Open-source collaborative Markdown editor suitable for self-hosting.

End-to-end encrypted notes application with cross-platform synchronization.

End-to-end encrypted note-taking application with open-source clients.

Open-source note-taking application with optional end-to-end encrypted synchronization.

Local-first open-source knowledge management and note-taking application.

Local Markdown-based knowledge management application with optional sync services.

Open specification for encrypted syncing of user data between clients and servers.

Open-source file synchronization and sharing platform that can be self-hosted.

Self-hostable collaboration platform for files, calendars, contacts and more.

File sync and collaboration platform available for self-hosted deployments.

Self-hosted open-source photo and video backup platform.

Self-hosted open-source photo management application.

Community server implementation compatible with Bitwarden clients.

Open-source password manager using encrypted local database files.

Open-source Android password manager compatible with KeePass databases.

Open-source Android authenticator with encrypted backups and account organization.

Open-source authenticator application for two-factor verification codes.

Authenticator application that works with supported YubiKey security keys.

Virtual card service for controlling online merchant payments in supported regions.

Privacy service offering alternative phone numbers, email addresses and identities.

Service providing phone numbers that integrate with XMPP-based communication.

Privacy-oriented mobile connectivity service offering eSIM products in supported regions.

Alias management features for organizing addresses under custom directories.

Email forwarding service that removes some trackers and creates private addresses.

Browser extension for quickly creating and managing addy.io email aliases.

Browser extension for OpenPGP encryption with supported webmail providers.

Open-source JavaScript implementation of the OpenPGP standard.

Open-source implementation of OpenPGP for encrypting and signing data and communications.

Open-source email client with privacy controls and built-in OpenPGP support.

Free service for creating tripwires that can alert when protected links or files are accessed.

Online test that reviews HTTP security headers configured on a website.

Website security scanning service for checking common web security configurations.

Documentation for configuring and understanding the LibreWolf privacy-focused browser.

Official Tor Project documentation covering Tor Browser, connections and privacy topics.

Guides and explainers about online privacy, encryption and account protection.

Resources and advocacy information covering digital privacy and civil liberties.

Mozilla resources explaining privacy features, practices and online tracking topics.

Check whether a password has appeared in known breach datasets without submitting it in plain text.

Search service for checking whether account information appears in known breach data.

Breach intelligence search platform for authorized exposure and security investigations.

Search and archival platform used for security and exposure research across public datasets.

Service for checking account exposure in indexed breach datasets.

Browser-based DNS leak test for checking resolvers visible from a connection.

Browser security and privacy test suite that checks web platform behavior.

EFF browser test for tracking protection and fingerprinting characteristics.

IP information service useful for seeing public network information associated with an address.

Shows public IP and related network information visible to internet services.

Connectivity test showing IPv4 and IPv6 behavior visible from a browser.

Test showing WebRTC information that a browser may expose.

Test showing canvas fingerprinting data available to websites.

Test showing font information that can contribute to browser fingerprinting.

Test showing WebGL information exposed by a browser and graphics stack.

Official downloads for the privacy-focused LibreWolf browser.

Firefox-based browser with customization and privacy-oriented features.

Firefox-based open-source browser with customization and privacy controls.

Independent open-source browser project building a new web engine.

Browser with built-in privacy protections and tracker blocking features.

Encrypted calendar service designed to protect event details and schedules.

Encrypted calendar integrated with Tuta privacy-focused services.

End-to-end encrypted synchronization for calendars, contacts and tasks.

Open-source Android CalDAV and CardDAV synchronization application.

Lightweight open-source CalDAV and CardDAV server for self-hosted calendars and contacts.

Public encrypted DNS service with blocking options provided by Mullvad.

Configurable DNS service for filtering, privacy and traffic control.

Public DNS resolver with filtering options and privacy-focused operation.

Public encrypted DNS service supporting privacy-focused DNS protocols.

Self-hosted network-wide DNS filtering software for ads and trackers.

Network-level DNS sinkhole for blocking ads and tracking domains across devices.

Fast open-source DNS proxy and blocker designed for self-hosted networks.

Self-hosted DNS server with encrypted DNS, blocking and advanced configuration.

Validating recursive DNS resolver commonly used for private self-hosted DNS setups.

Open-source caching DNS resolver with security and privacy capabilities.

macOS network monitor and firewall for controlling outgoing application connections.

Application firewall and network privacy monitor for desktop systems.

Open-source application-level firewall for Linux desktops.

Open-source network protocol analyzer for inspecting traffic and troubleshooting connections.

Network monitoring and firewall application for visualizing connections and data use.

Advanced account protection system designed to detect suspicious login activity.

Google tool for reviewing account security settings, devices and sign-in protections.

Microsoft account page for reviewing sign-ins, security methods and account protection.

Apple guidance for reviewing sharing, access and personal safety settings on supported devices.

GitHub account security controls for authentication, sessions and security keys.