It includes the ability to view/edit PDFs (including full-page viewing of any size) as well as the option of a full-screen viewing mode. Open-Xchange Viewer, Free Viewer Open-Xchange Viewer is just that — The most powerful PDF viewer available. It also includes a PDF editor — and it is the ONLY PDF viewer available with the Open-Xchange Editor Pro Open-Xchange Viewer Pro is a free open-source PDF viewer/editor. It is a fully-customizable and free application — and it is the only application available with the Open-Xchange Pro version. Open-Xchange Editor PRO, Free PDF Editor Open-Xchange Standard is one of our most popular products, with a number of features typically found on other standard, paid applications, that are found in our Open-Xchange editor. Open-Xchange Standard — Viewer Product Included in each bundle: Open-Xchange Pro — Complete Package The complete package for Open-Xchange Pro PDF Viewer, including (a) PDF Viewer and (b) PDF Editor with OCR (optional), is included in each bundle. The package includes Open-Xchange PDF Viewer, our PDF Viewer with OCR, and the Open-Xchange PDF Editor. Open-Xchange Viewer, Free — Viewer A simple and efficient free PDF viewer. View or edit files in your PDF-viewer of choice — and you can even embed our applications directly into your web or other applications. Features: Open-Xchange Viewer, Free Viewer Open-Xchange Editor and Open-Xchange Viewer, Free Viewer Free PDF viewer Free PDF Editor, Free Viewer A simple and efficient free PDF viewer. View or edit files in your PDF-viewer of choice — and you can even embed our applications directly into your web or other applications.