The software is included in the SDK, but the MCUXpresso "new project tool" (and any subsequent attempt to "Manage SDK Components" from the GUI) do not show FreeRTOS+TCP as an import option:
otsl_0-1729159747988.png
(MCUXpresso v11.10.0, and NXP Config Tools Framework 16.0.0.202407020751)
I don't know exactly how the tools "decide" to show options, but it's very likely because of the content of the manifest file:
otsl_1-1729160063843.png
All SDK components that are selectable in the GUI have an entry for the 1051, but freertos-plus-tcp does not.
This oversight means I can't easily use the tools to manage SDK components. I can manually add the component from the zip of the SDK, but then in the future if I'm updating SDK components (to new versions for example), I have to remember to manually update the FreeRTOS+TCP. As previously mentioned, It's a nuisance, and there doesn't seem to be any reason for it to be this way (other than possibly an oversight).