16 best open-source privacy software [Windows 10 & Mac]

Milan Stanojevic
by Milan Stanojevic
Windows & Software Expert
Milan has been enthusiastic about PCs ever since his childhood days, and this led him to take interest in all PC-related technologies. Before joining WindowsReport, he worked as a front-end web developer. Read more
Affiliate Disclosure
  • A direct connection to the Internet offers any website or software the possibility to easily break your privacy by collecting and selling private data.
  • Open Source software more trustworthy than closed-source ones. They are usually more secure as well.  
  • If you want to stay safe online, keep an eye on Security & Privacy hub for the best tools and guides.
  • Read about VPNs and which one is the most suitable for your use-cases in the VPN section
open source privacy software

Open-source simply means software that can be modified and shared due to the fact that its design can be accessed by the public.

If you’re looking for the best open-source privacy software to use with your computer or PC, there are many tools available from encrypted instant messengers, to secure operating systems and browsers, all of which protect you online and offline.

The advantage is that it is public and open for inspection, so there’s no way it can easily include secret backdoors for surveillance.

Best open-source privacy software

Private Internet Access

Private Internet Access

Private Internet Access, or PIA for short, is one of the top VPN providers in the world. Owned by Kape Technologies, they continue improving their servers and expanding their network.

They have always supported causes and took actions to defend the privacy of their users. They are investing in the latest technologies such as OpenVPN and Wireguard – both open source.

In addition, all of the software they develop is open source as well. This includes their iOS and Android apps, their desktop clients, and also their browser extensions for Chrome and Firefox.

The top reasons we recommend PIA are:

  • over 3300 servers available in 48 different countries
  • no-logs policy
  • compatible with a wide range of devices
  • 1 license can be used by the entire family
  • ability to pay anonymously
Private Internet Access

Private Internet Access

Get PIA VPN at this discounted price to enjoy the benefits of the open-source software and reclaim your anonymity online.

Buy now

CyberGhost VPN


This is a great VPN if you want privacy at its best. It re-routes your data via a remote proxy server, and is available as a free ad-supported app, as well as a paid service with better performance and more features.

For daily or occasional use, this VPN service is adequate, with simple configuration, and in a single click, it is activated and you feel like you’re browsing from a different country. You also get to see how much traffic you have transferred through CyberGhost via a handy graph, however, there are limited spaces on the servers so you have to wait a bit to gain access.


open source privacy software

This is a search engine provided as an open-source privacy software that doesn’t store your data, neither does it send your search terms to other sites, plus it treats every user equally. It is what is known as the first privacy-conscious search engine of the modern-day.

Get DuckDuckGo

You can also use CyberGhost and DuckDuckGo together for an extra layer of privacy.


tor browser vpn

This open-source privacy software, also known as the ‘onion router’ is one of the most popularly used ways of browsing the internet without leaving your online activity open for snoopers. Its network makes it hard for tracking your identity or activity, and you can browse anonymously on almost every website.

It protects your anonymity by taking all your communications, including instant messaging and apps, sending them to a large network of routers that make Tor servers, so it’s hard for sites or people to invade your privacy. It also has Privoxy, a proxy program that maintains your privacy.

Get Tor browser


This is an open -source privacy software in the VPN client arena that works with any VPN provider which supports OpenVPN protocol. It lets you automate, control, optimize, and troubleshoot your VPN connections, plus you can use it with your current VPN or replace it altogether.

Experienced VPN users gain more, as this open-source VPN is smaller, simpler, gives full control over the server list with fall back connections, plus you can import your connections from each VPN, and combine them to launch from a single menu. It also helps you run custom scripts and lets you see how a connection has been set up, plus make advanced connection tweaks.

Get OpenVPN


open source privacy software

You know more about OneDrive, iCloud and Dropbox, which all offer encrypted cloud storage, but these don’t keep your privacy protected as such because if compelled, they can give the government access to your files.

With SpiderOak, however, it will not and cannot because its users have the encryption keys. This cloud storage provider is the best open-source privacy software for cloud storage as its service revolves around your privacy, plus it delivers similar functionality to mainstream cloud storage service providers.

 Get SpiderOak


Gnu Privacy Guard

open source privacy software

One of the biggest thorns in today’s world is uncrackable email. However, there are open source privacy software like PGP (Pretty Good Privacy) which actually provides uncrackable encryption.

This tool was released first in 1991, but today, the Gnu Privacy Guard or GPG, which can be used with Windows and other operating systems and machines helps here. GPC is an open-source privacy software that’s been tried and tested by security software communities and is the only one trusted as a secure encrypted email system, so it can work with yours too.

Get Gnu Privacy Guard


Eraser File shredder

open source privacy software

Most people think you can just drag files into the recycle bin or trash and voila, they’re gone forever. Most of the time, you can restore back these files, or ‘undelete’ them. However, with open source privacy software, you can get file shredders that securely remote important and sensitive data from your PC forever. Eraser is one of the top file shredders available as an open-source software so you can use it for free!

Get Eraser file shredder


open source privacy software

This is an anti-tracking open source privacy software tool that you can add to your browser, and it’ll show you how much you are being tracked online, and who exactly is tracking you.

This tool is available for modern browsers both desktop and mobile, and it just tells or informs you how many companies are tracking your online activities such as your popularly visited sites, plus which companies are gathering your data so as to serve you ads.

Get Ghostery

If Google Chrome is your default browser, check out this list of the best privacy extensions for Chrome to protect your personal data.

AdBlock Plus

This is an open-source privacy software that blocks ads thus reduces the number of tracking cookies that are installed on your PC, significantly. It is also available for the most popular and widely used modern browsers, and today, more than 50 million people use it. Being an open-source program, its code can be inspected by developers too.

Because it blocks ads, it improves the loading speed of any website that you visit. But it doesn’t hide your identity. You might consider using a proxy for that.

 Get AdBlock Plus



open source privacy software

This is an open-source privacy software that protects you from spyware and other similar threats. It scans files in real-time on your PC, detects malware and ensures they don’t seep into your system.

It works well with open source antivirus programs like ClamWin to protect your PC from viruses by adding real-time scanning that the latter lacks. It sees and prevents all virus, spyware, Trojan, and malware attacks that may affect your privacy and security.

Get Winpooch

ClamWin and Clam Antivirus


These are free open source antivirus for Windows with high detection rates, scheduler, automatic download of virus database updates, plus an Outlook plugin. ClamWin antivirus has no real-time scanner, but you can use it with Winpooch for that added feature. Clam Antivirus integrates with mail servers for scanning attachments, and automatic updates via Internet. It is based on a shared library and you can use it with your own software, but the best thing is it keeps the virus database updated.

Get ClamWin and Clam Antivirus


Password Managers: KeePass and Mitro


open source privacy software

This is an open source password manager that gives you only one master password which you’ll use to unlock the database. But you can make a disk key to unlock the program, and for extra security, you can open both with the master password and disk key.

The databases have the most secure encryption algorithms i.e. AES and Twofish, so it would take ages to break into your database. It is portable (you can carry on a flash drive), runs on Windows without installation, stores nothing on your PC, and doesn’t create new registry keys or initialization files in your computer’s directory.

You can also group your passwords, assign icons to them, and set up auto-paste functions. If you want to access the password, there’s a search function for it. This open privacy software is simple and straightforward. It also tells you how safe your passwords will be, and lets you export hard copies of important passwords via TXT, HTML, CSV, or SML files.

 Get KeePass


off the record privacy software

This is an instant messaging plug-in that helps you send instant messages without having to worry about being watched or covert surveillance. It is one of the best open-source privacy software out there, so good that other encryption-based software includes its code in their own projects. It plugs into common instant messaging software and is free, tried and tested as one of the best and most trusted ways to chat online.

 Get Off-the-Record messaging


open source privacy software

This is another password manager that is lightweight, and browser-based, allowing you to log in to websites automatically. It is open source so it is hard for it to have backdoors and flaws. The issue with passwords is remembering them, but Mitro protects your logins and identities, plus it is tried and tested. It comes highly recommended by the Electronic Frontier Foundation privacy group, and works with various browsers like Chrome and Firefox, among others.

Get Mitro


open source privacy software

This open-source privacy software is good for cleaning up every trace of your online activities. It cleans browsers such as Internet Explorer and Firefox, but includes Windows Media Players, Adobe Acrobat, and Flash Player, as well as Google toolbar. It picks after apps like Microsoft Office and comes with a cleaner for your registry plus an uninstaller.

Get CCleaner

Got any other open-source privacy software to share with us? Leave your comment in the section below.


Your connection is not secure - websites you visit can find out your details:

  • Your IP
  • Your IP Address:

Companies can sell this information, alongside your location and internet provider name, and profit from it by serving targeted ads or monitoring your data usage.

Use a VPN to protect your privacy and secure your connection.

We recommend Private Internet Access, a VPN with a no-log policy, open source code, ad blocking and much more; now 79% off.

Frequently Asked Questions

  • Algorithms used for encryption are publicly released. Any software that uses those algorithms means it has open-source encryption. The software itself is usually open-source as well.

  • For now, the most secure algorithm is called Advanced Encryption Standard (AES) and it’s trusted by the US Government.

  • Windows 10 comes with BitLocker available on all versions except the Home Edition.

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