Apache PDFBox is an open-source Java library that allows users to create, manipulate, and extract content from PDF documents. It provides a range of features, including the ability to generate new PDF files, modify existing ones, and extract text and images. This makes it a valuable tool for developers working with PDF files in various applications. The library is maintained by the Apache Software Foundation and is widely used in both commercial and open-source projects. Its user-friendly API and comprehensive documentation make it accessible for developers of all skill levels, enabling them to integrate PDF functionalities into their applications easily.