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word-sys's PDF Editor vs indiPDF: catalog facts
word-sys's PDF Editor	indiPDF
Free Free and open source under GPL-3.0-or-later.	Paid A one-time $35 lifetime licence, with a free trial download.
Linux	Windows, Linux
Edits text and images on PDF pages Can merge and reorder pages	Annotations saved as standard PDF objects readable in other viewers Page organizing, merging and splitting built in
Linux only	Proprietary and paid after the trial No macOS version
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License: Proprietary
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 1, 2026

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