Client-Side: You can change what you see (e.g., flying, noclip), but the server usually corrects or ignores these changes. Most "free" executors are client-side.
Server-Side: If the script executes successfully, it affects the server. This means other players can see the changes, and you have "Admin" powers (like the person running the private server).
Aureus is a serverside executor for Roblox that allows you to run "require" scripts in Filtering Enabled (FE) games, making your scripts visible to all players. Unlike standard executors that run locally, Aureus works through backdoored games to provide global effects, such as trolling or modifying game environments. Key Features Global Visibility Report: Best Aureus Server-Side Executor - Desktop and