Marvel's Spider-Man Remastered PC Script Hook allows you to install and use Script Mods! They can call game functions, interact with the game's engine, and much more. Simply, it lets you inject scripts to the game. It also includes SDK for developers.
Marvel's Spider-Man Remastered PC Modding Tool allows you to extract and replace any asset in the game's asset archives. It's the foundation of creating and installing mods, having an easy to use mod file system where users can create and share their mods, and also install them.