https://freefilesync.org/

For Mac, PC, Linux

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https://www.gimp.org/

For Graphics  on Mac, Windows and Linux

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https://www.darktable.org/

Photography Workflow and Raw Developer

For Windows, Mac, and Linux

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https://www.libreoffice.org/

For Mac, Windows and Linux

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https://www.openoffice.org/

Mac, Windows and Linux

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https://growlybird.com/

20 Free apps for Mac including Growly Write, Draw, Photo, Calc, Notes etc

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https://www.blackmagicdesign.com/products/davinciresolve/

Video Editing for Mac, Windows and Linux

There is a free version and a more advanced version DaVinci Studio that is paid.

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Browsers  (most platforms supported)

https://www.google.com/intl/en_ca/chrome/

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https://www.mozilla.org/en-CA/firefox/products/

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https://www.opera.com/

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https://vivaldi.com/

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