- [Firezone](https://www.firez.one/) - WireGuard based VPN Server and Firewall. ([Source Code](https://github.com/firezone/firezone)) `Apache-2.0``Docker`
- [Headscale](https://github.com/juanfont/headscale) - Self-hostable fork of [Tailscale](https://tailscale.com), cross-platform clients, simple to use, built-in (currently experimental) monitoring tools. `BSD-3-Clause``Go`
- [Nebula](https://github.com/slackhq/nebula) - A scalable p2p VPN with a focus on performance, simplicity and security. `MIT``Go`
- [ocserv](http://www.infradead.org/ocserv/) - Cisco AnyConnect-compatible VPN server ([Source Code](https://gitlab.com/ocserv/ocserv)) `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`
- [PiVPN](https://www.pivpn.io/) - The simplest way to setup and manage a VPN, designed for Raspberry Pi. ([Source Code](https://github.com/pivpn/pivpn)) `MIT``Shell`
- [Pritunl](http://pritunl.com/) - OpenVPN based solution. Easy to set up.