Basecamp is a project management tool that helps teams collaborate, organize, and communicate in one central place. It provides a range of features including to-do lists, a file repository, messaging, and scheduling tools. It is designed to help teams stay organized and on track with their work, and can be used for a variety of different projects, including software development, marketing campaigns, and creative projects. Basecamp is available as a web application and also has mobile apps for iOS and Android devices.