Do you mean Hamachi? Hamachi is a VPN capable of establishing direct links between computers that are behind network address translation (NAT) firewalls without requiring reconfiguration.

zrok is a reverse proxy to easily share resources (http, files, web content) via a public URL or private share. zrok is built on top of OpenZiti.

OpenZiti is more comparable to Hamachi but being open source, more powerful and modern.