StockPlugins Mod is a interesting mod. It’s several ModuleManager config files which adds the possibility to use a plugin without the additional parts, is easy to use and easy to edit.
This config file requires ModuleManager v2.6.X.
All parts from these plugins can’t be accessed on the editor. If you don’t use them on your savegame, you can delete the parts folder.
How to install it ?
Unzip all files. Put the StockPlugins folder which in the GameData folder in your KSP/GameData folder.
How to update it?
Unzip all files. Merge the new StockPlugins folder with the old folder which is in your KSP/GameData folder.