Bundles an impressive set of annotation tools This said, with the aid of this useful app, you should be able to reduce the number of printed documents to quite a large extent, as well to give up on using pen and paper. Designed for both Windows desktop devices and mobile-based gadgets, Drawboard PDF is a comprehensive piece of software that aims to streamline the collaborative process by enabling you to annotate and markup PDFs with the help of its extensive set of tools and versatile environment.