Apps similar to NPS Enhanced include OpenVPN Connect, which is open source with a free version. Other options are ZeroTier, tunnl.gg, Fossorial Pangolin and ngrok. You can choose from more than 10 Localhost Tunnel Services like NPS Enhanced for Linux, Mac, Windows, self-hosting and Android.
Openport is an easy and secure reverse SSH. Forward any port, keep track of your machines, share files. Openport builds a tunnel from your machine to the outside world, so your friends can connect to your services or files directly. Don't worry about firewalls, DNS or FTP.
Fast, secure tunnels to your internal networks. Webhook Relay allows you to expose your localhost or any other server in private network to the public internet without configuring port forwarding or firewalls.
United Kingdom
Expose localhost to the internet. Features custom domains, SSL, HTTP basic auth and firewall for IP / CIDR restrictions. No download required.
Brazil
Btunnel gives you power to expose an http app running in localhost, helps you to share your local filesystem as well as any TCP app to the internet. Some of the features of btunnel are -
Expose localhost to the internet Get a public HTTPS URL for your local dev server. No signup, no config, no tracking. Just one command.
Norway
