The reason you see [DEPRECATED] is that usually on a new major release of a product “SmartApp”, the developer closes that thread and opens a new one with [RELEASE].
NST Manager is very much alive and was completed a very long time ago.
Feel free to post any of your questions in the following thread. All of the documentation is also listed in the top portion of the thread.
Also you may want to perform a search in that thread as well, because I’m sure many of the questions that you will have, have been asked and answered before.