Alfred is an alternative to Spotlight that allows users to perform various tasks with just keystrokes, including launching apps, finding files, and searching the web. It also includes customizable workflows, which can be used to automate repetitive tasks, and integrates with other applications to provide efficient solutions. With Alfred's powerful features, such as creating custom web searches, performing quick calculations, controlling iTunes, finding files quickly, contacting contacts, running Zaps, and automating workflows, users can streamline their workflow and increase productivity. The app is highly customizable, and its preferences can be synced through Dropbox, making it easy to use on multiple Macs.