holer Alternatives

ngrok exposes local servers behind NATs and firewalls to the public internet over secure tunnels.

Port forwarding service for exposing your local PC to Internet from behind firewall or without real IP address. Uses OpenVPN or SSH encrypted tunnel from localhost to Portmap.io.

You can create localhost server to publish everyone.

Your local webserver or game server or you can connect Raspberry pi

https://localtonet.com/ you can use this website. Its supports HTTP,TCP and UDP

And its free. Without time limits.

A lightweight, stable and high-performance reverse proxy for NAT traversal, written in Rust. An alternative to frp and ngrok. With lower resource consumption, it's possible to run on embedded devices like routers.

An open source serveo/ngrok alternative. HTTP(S)/WS(S)/TCP Tunnels to localhost using only SSH. - antoniomika/sish

Making it easy to play games with friends since March 2020.

LocalXpose is a reverse proxy that enables you to expose your localhost to the internet.

Bring your localhost servers on-line. PageKite is software that gives your localhost servers names and makes them globally visible. It works with any computer and any Internet connection. It's so easy you'll never want to think about routers, IP addresses or other technic.

Host web and TCP applications on the Internet from any network or device. Access databases, custom web apps, ssh, media servers and more. Connect to IP video cameras, automation sensors, point of sale systems, a Raspberry Pi, or other devices without a VPN or managing firewalls.

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.

Offers an open source sharing solution built on OpenZiti for secure app tunneling. Available as SaaS or self-hosting, it supports decentralized content sharing, is scalable for large and small deployments, allows private, secure communication, and operates on Raspberry Pi.

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.