jPDF Tweak (excellent PDF editor for Linux) with active development !
Hi. I discover an excellent PDF editor. It is jPDF Tweak. It is a portable java application.
Last developer update at 19 / 1 / 2017
Currently it does not support editing in Arabic characters in watermarks & document info (though it display them correctly ! I feel this application could be a great tool with further development.
Fedora 26 X64 bit Cinnamon edition on Lenovo ThinkPad e550 with Intel core i7 5500 CPU @ 2.40 GH X 2, RAM = 8 GB, HHD = 1 TB, Hybrid VGA (Intel Corporation HD Graphic 5500 + Radeon R7 M265 2GB)