
kdiff3
Beyond Compare
WinMerge
Meld
DiffMerge
Araxis Merge
P4Merge
Devart Code Compare
Adobe Acrobat DC
iLovePDF
Smallpdf
Wondershare PDFelement
Sejda
Foxit PhantomPDF
PDF24
PDF24 PDF Creator
Beyond Compare - Beyond Compare allows you to compare files and folders.
iLovePDF - Premium online PDF tool set
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
Smallpdf - PDF document management and conversion suite
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
Wondershare PDFelement - All-in-one PDF editor