7 Best Open Source VPNs for PC & Mobile: Free & Paid (2025)

Most VPNs keep their code hidden, making it impossible to verify their security claims. This lack of transparency puts your privacy at risk since you can't tell if the VPN has vulnerabilities or intentionally collects your data. Open-source VPNs solve this problem by making their code public.

That said, finding one that's both secure and user-friendly isn't easy. My top picks combine the security benefits of open source with easy-to-use apps and consistent performance. Whether you want to self-host or use a managed service, these VPNs let you validate their security while protecting your privacy.

After testing over 20 open-source VPNs, my top choice is Private Internet Access (PIA). It has a public source code, robust security features, and fast speeds. Its open-source clients work seamlessly across all major platforms, and you can try PIA for free, thanks to a 30-day money-back guarantee. Editor's Note: Transparency is one of our core values at vpnMentor, so you should know we are in the same ownership group as Private Internet Access. However, this does not affect our review process.

Try PIA Risk-Free >>

Short on Time? Here Are the Best Open Source VPNs in 2025

What Are the Open-Source VPNs?

Open-source VPNs are virtual private networks with source code that's freely available for anyone to inspect, modify, or verify. This transparency allows security experts and developers to review the code for vulnerabilities or malicious features, offering greater trust compared to proprietary VPNs that keep their code hidden.

While open-source VPNs provide transparency and customization, they usually require more technical expertise to set up and manage. Most open-source VPN solutions demand knowledge of networking concepts and comfort with using command-line interfaces.

If you're not particularly tech-savvy but value the benefits of open-source transparency, consider using commercial VPN services with open-source clients. These combine the trust of public code with user-friendly setup and support, making them a great middle ground.

Self-Hosting vs Managed Solutions

When using an open-source VPN, you have two main deployment options. Self-hosting provides complete control over your VPN but requires technical expertise to set up and manage. On the other hand, managed solutions are more convenient and user-friendly but come with less control over the server and configuration. The table below highlights the key differences between these options:

The key is to choose the option that fits your technical skills and privacy needs. Keep in mind that a poorly configured self-hosted VPN can end up being less secure than a well-managed service.

For most people, managed solutions are the better choice — they offer the transparency of open-source VPNs without the hassle of complex setup and maintenance. On the other hand, self-hosting is ideal for tech-savvy users who value complete control and are comfortable handling updates and troubleshooting.

Best Open Source VPNs — Full Analysis (Updated 2025)

1. Private Internet Access — Leading Open Source VPN With Fully Audited Code

Editor’s Choice Editor’s Choice Try Risk-Free for 30 Days
Tested January 2025

Works With:

Sky ESPN+ FIFA+ Netflix

Disney+ APV More

Try Private Internet Access >

www.privateinternetaccess.com

PIA stands out for its commitment to transparency through open-source development. All its apps are open source and available on GitHub, allowing anyone to inspect and verify the code's security. The codebase is well-documented and regularly updated, with security patches released promptly when vulnerabilities are discovered.

These repositories showcase PIA’s commitment to secure and accessible VPN solutions

My team and I experienced consistently fast speeds during our tests. With PIA's WireGuard protocol, the download speed dropped only slightly to 87.81 Mbps (just an 8% decrease) on a local server. This is impressive, as many VPNs can slow you down by over 50%. It’s also perfect for streaming, gaming, and other high-bandwidth activities.

The VPN provides essential features like a kill switch and split tunneling, which are fully configurable. While the default settings work well for most people, advanced users can customize these features to suit their specific needs.

A slight downside is that PIA is based in the US, which is part of the 5 Eyes Alliance (an international surveillance network). However, PIA’s no-logs policy has been proven in court multiple times, and independent audits regularly confirm that it doesn’t store and share user data. You can try PIA for free, as it’s backed by a 30-day money-back guarantee. The refund process is straightforward if you're not 100% happy with this open-source VPN.

Useful Features

• An open-source Chrome extension. The extension's source code is publicly available on GitHub in the repository pia-foss/extension-chrome.
• MACE blocker. This feature blocks ads, trackers, and malware at the DNS level.
• Port forwarding. Allows customization of connection settings for better performance with P2P applications and gaming.
• Command line interface. CLI lets you control the VPN via terminal commands, perfect for developers and advanced users who prefer automation and customization.

2. NordVPN — Advanced Security Features With an Open-Source Linux App and Audited Infrastructure

Works With:

Sky ESPN+ Dazn FIFA+

Netflix Disney+ APV More

Try NordVPN >

www.nordvpn.com

The NordVPN Linux app's source code is publicly available on GitHub, allowing you to verify its security. The VPN also has open-sourced Libtelio, a networking library used in all NordVPN apps, and a library for file sharing via Meshnet. Plus, the company has undergone multiple independent security audits, including a comprehensive infrastructure and application security evaluation by Cure53.

Licensed under GPL-3.0, it provides transparency for developers and privacy enthusiasts

During my tests, using NordVPN's Linux app was super easy. Our speeds dropped down by just 12% — to 81.94Mbps on local servers. The app uses an in-house NordLynx protocol by default, which is based on WireGuard and optimized for better performance. You can switch between NordLynx, OpenVPN, and IKEv2 protocols.

One notable con of the NordVPN Linux open-source app is its lack of a graphical user interface (GUI). The app operates solely through a command-line interface, which may be less user-friendly for some Linux users who prefer a visual interface. However, you can find third-party GUI wrappers on GitHub that provide a graphical interface for NordVPN on Linux.

The long-term NordVPN plans start at as low as $3.39/month. Thanks to its trustworthy 30-day money-back guarantee, you can try the VPN for free.

Useful Features

• Meshnet. You can use this feature for various purposes, including remote access, file sharing, and routing traffic through other devices. Meshnet is available for several Linux distributions, including Ubuntu, Debian, Fedora, and SUSE.
• Threat Protection Lite. It blocks intrusive ads and malicious websites while browsing.
• Obfuscated servers. They are designed to bypass VPN blocks and restrictions, making your VPN traffic look like regular HTTPS traffic.

3. Proton VPN — Advanced Security Features With Fully Open-Source Apps

Works With:

Sky ESPN+ Dazn FIFA+

Netflix Disney+ APV More

Try Proton VPN >

protonvpn.com

Proton VPN stands out with its fully open-source applications that anyone can inspect and verify. I downloaded the source code from GitHub and found that independent security experts regularly audit it for vulnerabilities. I verified that all apps use the latest security standards, including the OpenVPN protocol.

Proton VPN safeguards your location data with IP/DNS leak protection

During my tests, I found that connecting through Secure Core reduced our 100 Mbps speeds by about 35%. While this slowdown is noticeable, it's a worthwhile trade-off for users requiring maximum security. For regular browsing, single-hop connections only reduced the speeds by approximately 15%, which is impressive and barely noticeable in day-to-day use.

Proton VPN's apps feature an intuitive interface while still offering advanced customization options. The Linux command line tool provides even more control, allowing you to automate connections and customize routing. However, some of the more technical features might be overwhelming for VPN beginners. Plans start at $4.49/month, and you get a 30-day money-back guarantee to test everything for free.

Useful Features

• VPN accelerator. This proprietary technology can significantly improve speeds, especially over long distances.
• Alternative routing. Automatically find the fastest path to Proton servers if your ISP blocks VPN traffic.
• Tor over VPN. Special servers that route traffic through the Tor network for maximum anonymity.

4. hide.me — Highly Customizable Open Source Linux Client

Works With:

Sky ESPN+ Dazn FIFA+

Netflix Disney+ APV More

Try hide.me VPN >

www.hide.me

hide.me offers a powerful open-source Linux client that provides you with extensive control over your VPN connection. The command-line interface allows for in-depth customization of network settings, making it ideal for tech-savvy users who prefer granular control. During testing, I could easily modify routing tables, customize DNS settings, and configure multiple network interfaces directly through the terminal.

The hide.me Linux app supports multiple protocols, including WireGuard, known for its high speed, efficiency, and strong security; IKEv2, which offers robust encryption and quick reconnection capabilities; and OpenVPN, a highly secure and widely trusted protocol. Additionally, SSTP and SoftEther are supported, providing flexibility for bypassing restrictions and ensuring compatibility with various network configurations.

The choice of protocols is the same for all desktop apps

While the lack of a graphical user interface might be a drawback for some users, hide.me compensates with comprehensive documentation and active community support on GitHub. The long-term plans start at $2.69/month and come with a 30-day money-back guarantee, allowing you to test all features for free.

Useful Features

• Leak protection. Prevents IP leaks using a routing-based system instead of relying on firewall rules.
• Custom scripts. Allows running user-defined scripts upon connection or disconnection for automated network management.

Best Free Open-Source VPNs

1. OpenVPN

OpenVPN is a free, open-source VPN platform that allows secure connections for personal or enterprise use. Whether you're setting up point-to-point or site-to-site connections, OpenVPN provides robust solutions for WiFi security and seamless NAT firewall traversal. Its advanced features include:

• Multi-factor authentication (MFA). Enhance security by requiring multiple verification steps, such as passwords and authentication apps, to access the VPN.
• API integration. Automate and customize VPN management by connecting OpenVPN with other tools and systems via APIs.
• Load balancing. Distribute traffic efficiently across servers to prevent overload and ensure reliable performance.
• Failover capabilities. Maintain uninterrupted connectivity by automatically switching to backup servers if one goes down.

While OpenVPN is supported by an active developer community and receives regular updates, self-hosting it requires a solid understanding of networking and Linux commands, which may be challenging for some users. Additionally, since free open-source VPNs often rely on limited infrastructure, they might not match the performance or support quality of premium VPN services.

2. SoftEther VPN

SoftEther VPN, short for Software Ethernet, is a free, open-source VPN solution developed as an academic project at the University of Tsukuba in Japan. It offers a versatile multi-protocol VPN server with several notable features:

• Clone function of OpenVPN Server
• Support for EtherIP and "Ethernet over HTTPS" camouflage
• Ability to traverse NAT firewalls and bypass firewalls
• Compatibility with both IPv4 and IPv6
• Support for Microsoft SSTP VPN on Windows Vista/7/8
• Easy-to-use apps and seamless migration from OpenVPN

While SoftEther VPN offers impressive functionality, it's important to note that free and community-driven VPNs may not perform as well as premium, recommended VPNs due to limitations in infrastructure, support, and ongoing development resources. However, SoftEther VPN's academic background and open-source nature make it a compelling option for users seeking a flexible and customizable VPN solution.

3. Tinc

Tinc is a free, open-source VPN solution released under the GNU General Public License. It offers robust features, including optional compression, easy expansion capabilities, and NAT traversal. Tinc distinguishes itself with its mesh networking architecture, which automatically creates direct connections between nodes when possible.

The VPN uses modern cryptographic libraries and allows you to choose between several encryption methods. Plus, you can set up complex network topologies that automatically find the most efficient paths between nodes. This proved especially useful when I tested it in a distributed office setup, where direct peer-to-peer connections significantly reduced latency.

However, Tinc has a steep learning curve and minimal documentation compared to other open-source VPNs. You'll need solid Linux knowledge and networking expertise to configure it properly. During my setup process, I had to rely heavily on community forums and GitHub discussions to resolve configuration issues.

Quick Comparison Table: Open Source VPN Features

Here’s a quick comparison table of the top open-source VPNs. Depending on your budget and preferences, any of these options would be a great choice.

Editor's Note: Transparency is one of our core values at vpnMentor, so you should know we are in the same ownership group as Private Internet Access. However, this does not affect our review process.

Our Methodology for Testing the Best Open Source VPNs

We focused our testing on security, transparency, and ease of implementation when evaluating open-source VPNs. Plus, we tested the setup process on different operating systems.

After extensive testing of popular open-source VPN solutions, I identified the key factors that separate the best options from the rest. These criteria will help you select an open-source VPN that matches your technical expertise and privacy needs.

• Licensing terms. The software should be governed by a proper open-source license like GPL or MIT. This license protects your rights to modify and distribute the code while maintaining transparency.
• Security track record. The project should have a history of promptly addressing security vulnerabilities. I evaluated past security audits and the development team's response to reported issues.
• Resource requirements. The VPN client and server components should run efficiently without excessive CPU or memory usage. This is especially important when self-hosting on modest hardware.
• Configuration options. Advanced users benefit from granular control over VPN settings. The software should offer flexible configuration while maintaining sensible defaults for basic usage.
• Authentication methods. Support for strong authentication, such as certificate-based verification and 2FA, adds essential security layers. I prioritized VPNs with multiple authentication options.
• Community support. Active discussion forums, wiki pages, and user communities provide valuable troubleshooting help. You shouldn't have to figure out everything alone.
• Monitoring capabilities. Built-in logging and monitoring tools help track connection status and diagnose issues. The VPN should provide visibility into its operation without compromising privacy.

How to Use a Free and Community-Driven Open Source VPN

Step 1. Choose and download an open-source VPN client. Popular options include OpenVPN GUI for Windows or NetworkManager for Linux.

Step 2. Install the VPN client on your device:

• Run the installer.
• Follow the on-screen instructions.
• Accept the license agreement and choose installation options as needed.

Step 3. Obtain VPN configuration files: Download .ovpn files from your VPN provider or create your own if you're setting up a personal VPN server.

Step 4. Import the configuration files into your VPN client:

• For OpenVPN GUI: Copy the .ovpn files to the "config" folder in your OpenVPN installation directory.
• For NetworkManager: Import the files through the network settings.

Step 5. Connect to the VPN:

• Using GUI (e.g., OpenVPN GUI on Windows): Right-click the OpenVPN icon in the system tray. Select a server to connect to. Enter your credentials when prompted.
• Using the command line (e.g., OpenVPN on Linux): Open a terminal. Navigate to the directory containing your .ovpn file. Run: sudo openvpn --config your_config_file.ovpn.

Step 6. Verify your connection:

• Check that your IP address has changed using an online IP checker.
• Ensure you can access resources on the VPN network.

Step 7. Configure additional settings as needed:

• Set up a kill switch to prevent data leaks.
• Configure split tunneling if you want only certain traffic to go through the VPN.

Remember, the exact steps may vary depending on your chosen open-source VPN solution and operating system. Always refer to the official documentation for the most accurate and up-to-date instructions.

What Are the Risks and Benefits of Open-Source VPNs

Open-source VPNs offer unique advantages but also come with significant risks that you should understand before using them. I've thoroughly analyzed both aspects to help you make an informed decision.

Benefits of Open-Source VPNs

• Code transparency. Open-source VPNs make their source code publicly available, allowing independent security audits. This means you can trust that your data isn’t being mishandled. Commercial open-source VPNs, like PIA, combine this transparency with regular audits from trusted third-party organizations.
• Community-driven improvements. Open-source projects benefit from contributions by global developers, leading to rapid bug fixes and updates. Commercial providers amplify this by dedicating in-house teams to maintain and enhance their open-source code.
• Cost-effective. Most open-source VPNs are free, but self-hosting incurs server costs. While free solutions suit tech-savvy users, commercial open-source VPNs offer a better option for those willing to pay a small subscription fee to skip the hassle of server setup.
• Customization options. Open-source VPNs offer full configuration control for advanced users. However, commercial open-source VPNs simplify this process with user-friendly apps and pre-configured settings for privacy and security.

Risks and Limitations of Open-Source VPNs

• High technical barrier. Free open-source VPNs require technical skills for setup and maintenance. Commercial open-source VPNs remove this barrier by providing easy installation, pre-configured apps, and straightforward interfaces designed for non-experts.
• Limited support. Free solutions rely on community support, which can be slow or inconsistent. Commercial open-source VPNs offer professional 24/7 customer support to resolve issues quickly and reliably.
• Server maintenance responsibility. Self-hosted VPNs require ongoing attention for updates and security. Commercial providers manage secure, high-performance servers for you, eliminating this responsibility.
• Security gaps. Not all free open-source VPNs undergo regular audits, which could leave vulnerabilities unnoticed. Premium open-source VPNs, like PIA, perform frequent third-party audits to ensure maximum security.

FAQs on Open Source VPNs

Can I use an open-source VPN at home?

Yes, you can use an open-source VPN at home by either setting up your own server or using a managed solution. Self-hosting requires technical knowledge to configure and maintain the server but gives you more control over your data and privacy. The easiest way is to choose a managed service like PIA or Proton that uses open-source components while handling the technical details for you.

What is the most secure and fastest open-source VPN to run as a client on my home router?

PIA is a top choice for securing your home network, offering OpenVPN support and detailed setup guides for router firmware like DD-WRT, AsusWRT-Merlin, and Tomato3. With PIA, you can protect all devices on your network without installing individual apps. OpenVPN, one of the most secure and fastest open-source VPN protocols, is also an excellent option for home routers. Its open-source code undergoes regular audits and supports modern encryption.

Can I watch Netflix with an open-source VPN?

Yes, for example, PIA is an open-source VPN that also offers streaming-optimized servers. The transparent nature of open-source code doesn't impact streaming capabilities when implemented properly. However, if you're using a self-hosted VPN, your access to streaming platforms will depend on the servers you host.

Is OpenVPN still free?

Yes, OpenVPN remains free and open source. The core protocol and community edition can be downloaded and used without cost. However, setting up and maintaining your own OpenVPN server requires technical knowledge and resources. The OpenVPN company also offers paid solutions with additional features and support.

What are the best open-source VPNs to use with qBittorent?

qBittorrent users can choose between free and paid open-source VPN options. OpenVPN is a top free choice, offering strong security and broad compatibility. For paid services, PIA, NordVPN, and ProtonVPN are excellent options. PIA stands out with port forwarding and a large server network for faster torrenting. Paid options generally provide better performance, more features, and simpler setups.

Get the Best Open Source VPN

Using an open-source VPN requires careful consideration of security, privacy, and technical expertise. While free options like OpenVPN provide transparency and customization, managed solutions offer ease of use and reliable support.

PIA is my favorite open-source VPN. It combines the benefits of open source transparency with professional security features and a proven no-logs policy. Plus, you can try PIA for free with its 30-day money-back guarantee.

To summarize, these are the best open source VPNs…

Editor's Note: We value our relationship with our readers, and we strive to earn your trust through transparency and integrity. We are in the same ownership group as some of the industry-leading products reviewed on this site: Intego, Cyberghost, ExpressVPN, and Private Internet Access. However, this does not affect our review process, as we adhere to a strict testing methodology.

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