Opal vs PDF-XChange Viewer
A side-by-side look at Opal and PDF-XChange Viewer. For an in-depth review of either product, follow the links below.
Opal
Office & Productivity
Opal is an open-source alternative to Microsoft OneNote for taking notes and organizing information. It allows users to create digital notebooks to capture text, drawings, and web clippings.
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PDF-XChange Viewer
Office & Productivity
PDF-XChange Viewer is a free PDF reader and editor for Windows. It provides basic PDF viewing and annotation features like adding text notes, highlights, shapes, freehand drawing, and more.
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