[FredMitchell]

Google Workspace (originally called GSuite iirc)
A financial service company with exceedingly high security requirements chose this. They supported Windows, Mac, and LInux. (Sorry my previous answer did not address your specific questions.

1) What are the pros and cons versus MS Office?
Pro - works on all of those platforms, including yours. Supports simultaneous collaboration worldwide. You are always running the latest software with no installation or maintenance needed other than browser updates. While the programs are slightly different, there are plenty of youtube videos and tutorial and how-to's available for both office and google products. You can likely ask things like I did X in some Office tool. How do I do that in the corresponding google tool?


The Workspace product is for organizations. It is a subscription product. The individual components that you will want to use personally are still free.
You can try it today. It is free. You can gradually phase into it with no pain.
Con - You will need to learn the equivalent things if you convert,

2) How secure is the software?
If it was secure enough for this firm, it exceeds your security requirements.

3) Is it open source or proprietary software?
Proprietary.

4) Can you open Word, Excel, and PowerPoint documents?
Yes.