Xournal and it's successor Xournal++ is pretty handy...
Xournal++
https://xournalpp.github.io/
The predecessor
http://xournal.sourceforge.net/
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Xournal and it's successor Xournal++ is pretty handy...
Xournal++
https://xournalpp.github.io/
The predecessor
http://xournal.sourceforge.net/