strongswan

Easiest, most secure way to use WireGuard and 2FA

Reverse proxy, secure introspectable tunnels to localhost

HTTP(S) server and reverse proxy, and IMAP/POP3 proxy server

Proxy server that works as a poor man's VPN

Mesh VPN based on WireGuard

SSL/TLS VPN implementing OSI layer 2 or 3 secure network extension