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NATMap vs rathole: catalog facts
NATMap	rathole
Free Free and open source under the MIT licence.	Free Free and open source under the Apache 2.0 licence.
Windows, Linux, Command line	Windows, Linux, Self-hosted, Command line
Exposes internal TCP and UDP services without a relay server Bind mode keeps traffic out of the program	Self-hosted alternative to ngrok and frp Written in Rust with a focus on low resource use
Only works when every NAT layer is full cone No published release binaries in the repository	Needs your own server with a public address Configured through files on the command line, with no graphical interface
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: MIT	License: Apache-2.0
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.