GitHub Gists are a simple way to share code snippets, notes, or any text-based content. They allow users to create and store small pieces of code or text, which can be easily accessed and shared with others. Each gist can be public or private, making it a flexible tool for collaboration or personal use. Gists support various programming languages and can include syntax highlighting, making them visually appealing and easier to read. Users can also fork gists, enabling them to create their own versions or modifications of existing content, fostering a collaborative environment within the GitHub community.