- [OpenVPN](https://community.openvpn.net) - Uses a custom security protocol that utilizes SSL/TLS for key exchange. ([Source Code](https://github.com/OpenVPN/openvpn)) `GPL-2.0``C`
- [OpenVPN](https://community.openvpn.net) - Uses a custom security protocol that utilizes SSL/TLS for key exchange. ([Source Code](https://github.com/OpenVPN/openvpn)) `GPL-2.0``C`
- [SafeVPN](https://github.com/chinagloud/SafeVPN) - Open-source secure remote access solution that allows external engineers to connect and operate servers while blocking data exfiltration and recording all activity via tamper-resistant audit logs. `GPL-3.0``Shell`