Overview of chmlfrp and available community clients
chmlfrp is an intranet penetration (NAT traversal) service provider offering both free and paid tiers. For users looking for client implementations, there are community-developed projects available including a CLI tool and an Android application.
CLI Client: https://github.com/ShiYioo/chmlfrp-cli Android Client: https://github.com/ShiYioo/chmlfrp-android