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NATMap vs boringproxy: catalog facts
NATMap	boringproxy
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence.
Windows, Linux, Command line	Windows, Linux, Self-hosted
Exposes internal TCP and UDP services without a relay server Bind mode keeps traffic out of the program	Automatic HTTPS certificates Web UI for managing tunnels
Only works when every NAT layer is full cone No published release binaries in the repository	Last code change was in 2024 Needs a server with a public address
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: MIT	License: MIT
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.