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frp vs NATMap: catalog facts
frp	NATMap
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Command line	Windows, Linux, Command line
Connects a client behind NAT with a reachable server.	Exposes internal TCP and UDP services without a relay server Bind mode keeps traffic out of the program
Requires configuring a server and protecting exposed services.	Only works when every NAT layer is full cone No published release binaries in the repository
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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