Opal vs PDFtk
A side-by-side look at Opal and PDFtk. 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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PDFtk
Office & Productivity
PDFtk is an open-source command-line tool for working with PDF documents. It enables users to merge, split, rotate, encrypt and decrypt PDF files. PDFtk is lightweight, fast and cross-platform.
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