As for Acrobat (PDF reader), here are some alternatives not mentioned:
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Okular (KDE app, runs Windows and Android too but in my experience the Android app is shitty)
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muPDF and muPDF-gtk (minimalistic)
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zathura (vim-like commands and keybinding)
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Librera (if you use it for reading book on Android)
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Foxit (Free of charge, proprietary)