When comparing Xournal (Linux) vs pdf-xchange Editor, the Slant community recommends pdf-xchange Editor for most people. In the question“What is the best software to annotate a PDF?” pdf-xchange Editor is ranked 5th while Xournal (Linux) is ranked 7th. The most important reason people chose pdf-xchange Editor is:
You can use Playonlinux to install the Windows exe file with 32-bit wine.
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Pros
Pro Open-source and free software (GPL license)
Pro Supports Wacom tablets and similar input devices
Detects the pressure applied to the pen and adjusts the line thickness, creating more natural-looking drawings.
Pro A complete set of shapes with properties control as well as a calibrated measuring/dimensioning tool
You can use Playonlinux to install the Windows exe file with 32-bit wine.
Pro Provides proper annotation support
Unlike xournal which only adds a graphical layer on top.
Cons
Con Importing a PDF can be a lossy process
Upon importing some PDF files, each page becomes a raster picture. Features of the original PDF, such as vector graphics or selectible text, are completely lost.
For other PDFs, this problem does not happen.
Con Closed source
Execution under Linux only via wine. Sandboxing recommended.