This is the core question. As of , the answer is complex.
There are spiritual successors—userscripts on GreasyFork (e.g., "Neopets Auto Buyer," "QoL Suite") that replicate some Leethax functions. But the unified, one-click, Firefox-native magic is gone. leethax net firefox extension
You may find GitHub repositories or forum posts claiming to have a working Leethax fork for Firefox. These typically require: This is the core question
Using the leethax.net extension comes with notable risks and technical hurdles: "Neopets Auto Buyer
Instead, embrace modern alternatives:
Leethax for Firefox wasn’t just a cheat extension. It was a proof of concept for how far browser automation could go in a walled-garden web game. It taught a generation of young gamers about HTTP requests, DOM manipulation, and the ethics of automation.