Best Free Security & Privacy

Ranked by community votes · Free only

All Free Freemium Paid Open Source

ProtonMail

Encrypted email service with zero-access encryption

#1 Ranked

Locki

AES-256-GCM encryption for your team — right inside Slack, Gmail, Jira, and Google Docs

7.6

2 ratings

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digga · Domain & Infrastructure research

Free domain lookup for DNS records, RDAP, WHOIS, subdomains, IPs, and email security

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Signal Protocol

End-to-end encrypted messaging protocol for secure communication

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KeePass Password Manager

Free open-source password manager with encrypted database storage

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Nord VPN

Private and secure virtual private network for Android devices

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Logseq

A privacy-first, open-source knowledge management tool

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Ghostery

Ad blocker and tracker protection for browsers

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Sailfish OS

Linux-based mobile operating system with advanced security and user experience

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Ubuntu Touch

Open-source mobile operating system for freedom and privacy

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Tor Browser

Protect your anonymity online with Tor Browser.

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Lenovo ThinkPad X1 Carbon Gen 10

Meet the Lenovo ThinkPad X1 Carbon Gen 10 built on the Intel® Evo™ platform—redesigned for improved collaboration, extra security, and powerful performance

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FDR

CSP refinement checking software tool

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Nikto

Open-source web server scanner for security professionals

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JailbreakMe

Jailbreak tool for iOS devices

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Metasploit

Penetration testing framework for identifying security vulnerabilities

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Panguard AI

AI agent security for developers

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Ortu

Local-first, cross-platform clipboard history with images & files, paste stack, encryption and instant full-text search

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MonoCloud

MonoCloud is a secure authentication platform for developers offering passkeys, social login, SSO, MFA, and user management

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WorkClaw - the AI team for your team

Collaborative, proactive, customizable AI coworkers

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Bluedot AI Note Taker

Bluedot is the bot-free AI note taker for online and in-person meetings

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imgproxy

imgproxy is a fast and secure standalone server for resizing and converting remote images

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BugDrop

Free, open-source website feedback widget for GitHub Issues

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OpenFang — The Agent Operating System

Open-source Agent OS built in Rust

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Zeron

The AI-augmented control plane for cybersecurity — unify your security stack, quantify cyber risk in dollars, and run governed AI agents

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WayKnow

Privacy-first local tools

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ScanSheet

Scan barcodes with your phone into a spreadsheet

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UnifiedTools Pro

124+ free browser-based tools for SEO, AI writing, PDF editing, images, QR codes, security checks, and developer workflows

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MrPenetrator

Investigate your own websites with Quick and Deep Pro scans, AI-assisted fixes, confidence scoring, and executive exports

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Cloud-CCTV | Secure CCTV Cloud Storage

Reliable FTPS cloud storage for your security cameras

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Dokyo

Dokyo: the privacy-first workspace for docs, notes, and collaboration

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Epub Reader Pro

Open any EPUB file in your browser in seconds

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AISeen

The free AI SEO audit tool

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Invoice Buddy

Create professional invoices instantly with Invoice Buddy - Australia's free, privacy-first invoicing tool

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Memra

Memra is a persistent AI Agent Memory API

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PassKeyra, Gestionnaire de mots de passe zero-knowledge

Chiffrement local AES-256-GCM, PBKDF2 600 000 itérations, sans tracking

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Free Link in Bio Tool & Custom Bio Link Page

Create a fast, customizable link in bio page with soc

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Invoice No. — Free Invoice Generator

Free invoice generator for freelancers and small businesses

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Free Browser-Based PDF Editor — DraftPDF

A free, privacy-first PDF editor with annotation, measurement, forms, signatures, and more

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HyperPress Scanner

Run a free WordPress performance audit in under 3 minutes

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Lumli - Privacy-First AI Image Studio

Privacy-first image, passport-photo, and PDF tools with local-first workflows and clear cloud-backed AI where needed

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Horizon Security

Professional security hardware. Uncompromising quality.

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Fake Image Detector

Free online tool to detect fake images and photo edits using ELA technology

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Securewp.net

Free WordPress security plugin with real firewall, hardening, and login protection

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verified.fyi

Free website trust checker

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Domain Verity

Continuously monitor your domains for TLS, email authentication (SPF/DKIM/DMARC), certificate expiry, and HTTP security header gaps

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CortexPrism

The open-source Agent Operating System: a self-hosted AI OS with 30 LLM providers, 5-tier persistent memory, 60+ tools, MCP plugin marketplace, sandboxed code execution, multi-user collaboration with

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Sehin.eu

Remote support for website issues, DNS, email delivery, VPS administration, security reviews and payment-system configuration

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anon.li

Protect your identity with private email aliases, end-to-end encrypted file sharing, and confidential forms

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TrustedTech

Get specialty expertise for Microsoft Cloud support, Microsoft perpetual licensing, and Professional and Security Services for medium and enterprise-sized businesses