Greasy Fork is a user script library and community website. It hosts over 50,000 user scripts that enhance the functionality of various web applications and services. Users can browse and download scripts written by other users in various categories, such as social media, gaming, entertainment, and productivity. Greasy Fork allows users to customize their web experience, increase their productivity, and automate repetitive tasks. The site also offers features such as a search engine, reviews, ratings, and a script manager that helps users manage their scripts. Greasy Fork is open-source and available for free to everyone.