Nintendo Dev Interface
From Rare Gaming Dump
The Nintendo Dev Interface (NDI) is a PC application created by Nintendo to assist registered developers in the management and deployment of SDKs from the Nintendo Developer Portal or other Nintendo development servers.
An "internal version" of the Nintendo Dev Interface is known to exist, but nothing is known about it.
The Nintendo Dev Interface actually predates the creation of the Nintendo Developer Portal, and as such, early versions of the application supported platforms which are not supported by the Developer Portal, such as the Wii and DS. Current versions of the application only support the Wii U, 3DS, and Nintendo Switch.