The Great Suspender is a browser extension for Google Chrome that helps reduce memory usage by automatically suspending inactive tabs. Suspended tabs are still visible in your tab bar, but their content is not loaded in the background, which reduces memory usage. When you want to view a suspended tab again, you simply click on it and the content will be reloaded. The Great Suspender also includes a whitelist feature, so you can prevent certain tabs or websites from being suspended if you need them to remain active in the background.