1.Torque

As of my last update in July 224, the most popular VPN clients available today are based on open-source software, which allows users to download and use them freely. Here are some of the most well-regarded VPN clients:

• A highly secure and open-source VPN that allows users to access the internet without authentication.
• It supports a wide range of protocols (e.g., OpenVPN, P2P, VPN) and is highly customizable.
• It is considered one of the most secure VPNs available.

2. Vestia

   • A modern and open-source VPN that offers a sleek user interface and multiple encryption protocols.
   • It is lightweight and fast, making it suitable for remote work, online gaming, and other casual uses.
   • It also supports the Tor network, which is known for its high levels of anonymity.

3. OpenVPN

   • An open-source VPN platform that allows users to connect to any server over any protocol.
   • It is highly customizable, allowing users to add custom protocols and customize their connection.
   • It is known for its flexibility and ease of use.

4. ExpressVPN

   • A popular and widely-used VPN that offers a range of encryption protocols and user-friendly features.
   • It supports 1+ protocols (e.g., OpenVPN, Tor, VPNs like V2, etc.) and is available in both free and paid versions.
   • The latest version, ExpressVPN v3+, includes performance improvements and additional security features.

These VPNs are all open-source and free to use, making them excellent choices for anyone looking to stay anonymous or connect to the internet without authentication.