Download the zip from the releases page.
You can install the manager either by downloading and compiling the source code from this repository, or downloading the latest release package for the corresponding game from here. The manager functions by copying the contents of enabled mod folders to the root of the game before launching, allowing the user to avoid lots of manual work in managing their mods. This is a simple mod management utility for the Naruto Shippuden: Ultimate Ninja Storm games, 3, Revolution, and 4 specifically, based off of MainMemory's SA2 Mod Manager.