- Amnezia VPN (OpenVPN & WireGuard protocols) - Windows, MacOS, iOS, Android, Linux (no ARM support)
- Anywherelan (TCP & QUIC) - Windows, Linux, Android, MacOS
- boringproxy (in-house developed "NameDrop" protocol) - Windows, MacOS, Linux, FreeBSD, OpenBSD
- boringtun (WireGuard protocol) - MacOS, Linux (mobile clients not open source)
- Brook (in-house developed "Brook" protocol as well as WebSocket Secure, SOCKS5, and QUIC protocols) - Windows, MacOS, Linux, OpenWrt (mobile clients not open source)
- Chisel (SSH protocol) - Windows, MacOS, Linux
- cjdns (in-house developed "CryptoAuth" protocol) - Windows, MacOS, Linux, FreeBSD, N
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.