Privacy Tools Every Internet User Should Know About
Why Privacy Matters Today
Every website you visit, every search you make, every message you send — someone is probably watching. Advertisers track your browsing habits, social media platforms profile your interests, and data brokers compile detailed dossiers on your online activity. It’s not paranoia; it’s the business model of the modern internet.
The good news? You don’t have to accept it. A whole ecosystem of free, open source privacy tools exists to help you take control back. And unlike proprietary privacy software that might be selling your data in ways you didn’t agree to, these tools are transparent — the source code is open for anyone to inspect.
This guide covers the essential privacy tools every internet user should know about, from browsers and search engines to encrypted messaging and password managers. You don’t need all of them at once. Pick one category, make the switch, and move on to the next when you’re ready.
Privacy-Focused Browsers
Your browser is the gateway to the internet — and the most common attack surface for tracking. Most major browsers are built by ad companies (Chrome by Google, Edge by Microsoft) whose business models depend on knowing what you do online.
Firefox is the browser that started the privacy revolution. Developed by the non-profit Mozilla Foundation, it blocks cross-site trackers by default, offers Total Cookie Protection (every site gets its own cookie jar), and supports DNS over HTTPS to encrypt your browsing queries. Add the Multi-Account Containers extension and you can isolate different parts of your online life — work, personal, banking — so they never mix. Read our full review of Firefox.
Tor Browser takes privacy to a different level. It routes your traffic through three layers of encryption (the “onion” routing that gives Tor its name), making it nearly impossible to trace your activity back to you. It’s slower than a regular browser — every hop adds latency — but for sensitive browsing, it’s the gold standard. Journalists, activists, and whistleblowers around the world rely on it.
Brave Browser Strips out ads and trackers at the browser level.
Search Engines That Don’t Track You
Google search may be free, but you pay with your data — every query is logged, analysed, and used to build your advertising profile. Privacy-respecting alternatives offer the same results without the surveillance.
DuckDuckGo is the most popular private search engine. It doesn’t track your searches, doesn’t build a profile of you, and shows the same results to everyone who types the same query. It also offers “bangs” — shortcuts like !w for Wikipedia or !a for Amazon — that let you search other sites directly while maintaining your privacy on DuckDuckGo itself.
For the truly privacy-conscious, SearXNG is a self-hosted metasearch engine that aggregates results from multiple search providers (including Google, Bing, and DuckDuckGo) without exposing your IP address or search history to any one of them. You can run your own instance, or use one of the many public instances maintained by the community.
Password Managers
Using the same password for every site is one of the biggest security risks you can take. But remembering 50 different complex passwords is impossible without help. That’s where password managers come in.
Bitwarden is the password manager we recommend most often. It’s fully open source, end-to-end encrypted, and free for the core features. Your passwords are encrypted on your device before they ever reach Bitwarden’s servers, so even Bitwarden can’t read them. It works on every platform — Windows, macOS, Linux, Android, iOS — and every major browser. The free tier includes unlimited devices, unlimited passwords, and secure sharing with one other person. For most people, the free plan is all you’ll ever need.
KeePassXC is the offline alternative. Instead of syncing through a cloud service, your password database lives on your local machine. You sync it yourself — via Nextcloud, USB drive, or any method you choose. It’s more work to set up, but gives you complete control. KeePassXC is particularly popular with security-conscious users who prefer to manage their own infrastructure.
Pro tip: Pair your password manager with Aegis Authenticator for two-factor authentication codes. It’s an open source alternative to Google Authenticator with encrypted backups and excellent import/export options.
Ad Blockers and Tracking Protection
Ad blockers do more than remove annoying banners — they stop the tracking scripts that follow you across the web. The right blocker can speed up page loads by 30-50% while protecting your privacy.
uBlock Origin is the gold standard of content blockers. It’s lightweight (uses far less memory than alternatives like AdBlock Plus), highly effective (blocks ads, trackers, malware domains, and annoyances by default), and completely open source. It’s available for Firefox, Chrome, Edge, and Opera. Install it as your first line of defence.
Privacy Badger from the Electronic Frontier Foundation (EFF) takes a different approach. Instead of blocking known trackers from a fixed list, it learns as you browse — when it sees a third-party domain tracking you across multiple sites, it automatically blocks it. It’s an excellent complement to uBlock Origin, catching trackers that might slip through static filter lists.
For network-wide protection, Pi-hole blocks ads and trackers at the DNS level — before they even reach your devices. Install it on a Raspberry Pi and every device on your network (phones, smart TVs, IoT gadgets) gets ad blocking automatically, with no configuration needed. It’s one of the most satisfying privacy projects you can set up.
Encrypted Messaging
Standard SMS and most chat apps (including WhatsApp despite its end-to-end encryption claims) are not as private as you might think. For truly secure communication, you need an app designed for privacy from the ground up.
Signal is the gold standard for encrypted messaging. It uses the Signal Protocol (now the industry standard — WhatsApp and Facebook Messenger both use it for their encryption), but Signal goes further: it collects almost no metadata, doesn’t store your contacts on its servers, and is completely open source. All calls and messages are end-to-end encrypted by default. And it’s free, funded by grants and donations. Read our comparison of Signal vs Element.
Delta Chat takes an unusual approach: it uses email as the transport layer. Your messages are encrypted end-to-end using Automatic Cryptographic Email Standards (Autocrypt), but they travel through regular email servers. The advantage? You can message anyone with an email address, even if they don’t have Delta Chat installed — though messages to non-Delta Chat users won’t be encrypted. It’s a clever bridge between mainstream communication and privacy.
SimpleX is the most radically private option. It has no user identifiers at all — no phone number, no username, no email. Every contact has a unique address that can be revoked or rotated. SimpleX doesn’t even store messages on a central server (each message is routed through a different relay node). It’s the most recent entrant to the space and arguably the most privacy-preserving messaging platform available today.
Telegram Desktop is popular but important to understand: its default chats are not end-to-end encrypted (they use server-client encryption, meaning Telegram could theoretically read them). You need to use “Secret Chats” for end-to-end encryption, and those don’t sync across devices. For most privacy-conscious users, Signal or SimpleX is a better choice.
VPNs and Secure Connections
A VPN (Virtual Private Network) encrypts all your internet traffic and routes it through a server in a location of your choice, hiding your IP address from the sites you visit and preventing your internet provider from seeing your activity.
Proton VPN from the makers of Proton Mail is our top recommendation. It’s open source, has a proven no-logs policy (audited by independent security firms), and offers a genuinely usable free tier — unlimited bandwidth, no ads, and servers in three countries. The paid version adds more servers, faster speeds, and advanced features like Secure Core (routes traffic through multiple servers in privacy-friendly jurisdictions).
WireGuard isn’t a consumer VPN service — it’s the VPN protocol that’s revolutionising secure connections. It’s faster, simpler, and more secure than older protocols like OpenVPN. Many modern VPN services now use WireGuard under the hood (including Proton VPN). You can also set up your own WireGuard server on a cheap VPS for about $5/month, giving you a personal VPN that no third party controls.
OpenVPN is the veteran of the VPN world. It’s battle-tested, widely supported, and the default choice for many self-hosted VPN setups. While WireGuard is overtaking it in performance, OpenVPN remains a solid, well-documented option supported by virtually every device and operating system.
Encryption Tools for Your Data
Even if your communications are secure, your files might not be. Encryption tools protect your data at rest — on your hard drive, in the cloud, or on a USB stick — so even if someone gains physical access, they can’t read your files without your key.
VeraCrypt creates encrypted volumes — think of them as secure vaults on your disk. You can create an encrypted file container or encrypt an entire drive (including your system drive). VeraCrypt supports plausible deniability through hidden volumes: you can have a “decoy” volume with mundane files and a hidden volume inside it with sensitive data, and no one can prove the hidden volume exists.
Cryptomator is designed for cloud storage. It encrypts your files before they sync to Dropbox, Google Drive, Nextcloud, or any other cloud provider. Each file is encrypted individually (so providers only sync the changed parts), and the folder structure is obfuscated to hide file names and sizes. It has a clean, user-friendly interface and works on all major platforms.
GnuPG (GNU Privacy Guard) is the command-line veteran for email and file encryption. It implements the OpenPGP standard and is used by developers, journalists, and security professionals worldwide. While not as user-friendly as modern tools, it’s unparalleled in flexibility and is built into most Linux distributions.
Firewalls and Sandboxing
Sometimes you need to contain applications rather than trust them. Firewalls control what goes in and out of your network, while sandboxing tools restrict what applications can do on your system.
Firejail is a SUID sandbox for Linux that restricts untrusted applications from accessing the rest of your system. Run Firefox in a Firejail profile and it won’t be able to read your SSH keys, your Documents folder, or your browser profile from another instance. It comes with profiles for hundreds of common applications and integrates seamlessly into your existing workflow.
Fail2ban protects your server from brute-force attacks by monitoring log files for repeated failed login attempts and temporarily banning the offending IP addresses. If you run any kind of internet-facing service — even a personal Nextcloud or Jellyfin server — Fail2ban is essential.
Check Your Digital Footprint
Once you’ve locked down your tools, it’s worth checking what information you’re already exposing. Nmap can scan your network for open ports and vulnerable services. Lynis is a security auditing tool for Linux systems that checks hundreds of security settings and suggests improvements. And Hashcat lets you test your password strength by attempting to crack your own hashes — a sobering exercise that usually convinces people to use longer passphrases.
For a quick browser check, visit Cover Your Tracks (formerly Panopticlick) from the Electronic Frontier Foundation. It analyses your browser’s tracking protection, fingerprinting resistance, and whether you’re blocking trackers effectively. Run it before and after making the changes in this guide to see your improvement.
Where SSL/TLS Certificates Fit In
Every time you visit a site with HTTPS (the padlock icon in your browser), an SSL/TLS certificate is verifying that you’re talking to the real site, not an imposter. Let’s Encrypt provides these certificates for free, automating the entire process. If you run a website or a self-hosted service, Let’s Encrypt makes securing it with HTTPS trivial — and it’s one of the most important infrastructure projects for a private, encrypted web.
Getting Started: Your Privacy Roadmap
Trying to adopt all of these tools at once is overwhelming. Here’s a practical order to start:
- This week: Install uBlock Origin on your browser. Switch your default search engine to DuckDuckGo. Install Bitwarden and change your most important passwords (email, banking, social media) to unique, complex ones.
- This month: Set up Firefox as your daily browser with Privacy Badger alongside uBlock Origin. Install Signal and start moving your important conversations there.
- Next quarter: Set up Proton VPN (or roll your own with WireGuard). Encrypt your sensitive files with Cryptomator if you use cloud storage. Set up Pi-hole for network-wide ad blocking.
- Ongoing: Use Cover Your Tracks to periodically check your browser fingerprint. Explore Tor Browser for truly sensitive browsing.
The Bottom Line
Privacy isn’t about having something to hide — it’s about having the right to choose who sees what you do. The tools exist and they’re free. The only barrier is inertia. Pick one area, make the change, and build from there.
Every tool listed here is open source, which means the code is public, auditable, and can’t hide backdoors or shady data collection. That’s the guarantee proprietary privacy tools can’t offer.
Browse our Privacy Tools directory for more open source privacy recommendations, and check out the full directory of over 200 free software tools.