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PDF Annotator vs Xournal++: catalog facts
PDF Annotator	Xournal++
Paid Paid software with a free trial.	Free Free and open source under the GPL 2.0.
Windows	Windows, macOS, Linux
Handwritten annotations with pen and touch on tablet PCs Annotations saved into the original PDF and viewable anywhere	Pressure-sensitive stylus support on Wacom, Huion and XP-Pen tablets Annotates on top of PDFs while keeping their text selectable
Windows only Paid after the trial	Not a PDF editor; it draws on top rather than changing the document Touch and palm rejection need configuration on some tablets
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.