@arnaud-derette said in Terminal window in a N++ tab:

I searched a plugin capable of doing that

NppConsole was rescued from oblivion a few years by @Michael-Vincent, but never put into the Plugins Admin. That literally runs cmd.exe (or other executable, like powershell) in a panel in Notepad++ (the command that it runs is defined through the About box, rather than a separate config dialog).

Or the NppExec plugin (available thru Plugins Admin), which can be used to launch anything (and has a whole scripting language to go with it), and it has a console window that such commands can show their output in.

Either one of those plugins should work for you.