Microsoft Office For Mac Os X Lion 10.7.5 -

This is the last version that officially supports OS X 10.7. It is free, open-source, and opens all Word/Excel files perfectly. Apple iWork '09:

Running Office 2011 on OS X Lion carries significant risks:

If you cannot locate a valid product key for Office 2011, or if you require better compatibility with modern file formats, several free alternatives run natively on OS X Lion. LibreOffice (Version 4.3.x)

Since Microsoft no longer sells or supports Office 2011, finding a legitimate copy requires effort. Microsoft Office For Mac Os X Lion 10.7.5

Word 2008, Excel 2008, PowerPoint 2008, Entourage 2008 (replaced by Outlook in later versions).

Lion itself also hasn’t seen security patches in years. Running it online is risky unless you’re very careful.

The automated online activation servers for Office 2011 are largely offline. Attempting to activate over the internet may result in an error. This is the last version that officially supports OS X 10

If you just need to get work done and don't strictly need the "Microsoft" brand: LibreOffice (Version 4.3.7):

Fully compatible up to the final update (Version 14.7.7).

Activation: The automated online activation servers for Office 2011 are frequently offline or decommissioned. Users may need to utilize telephone activation, though even this service is increasingly limited for older products. LibreOffice (Version 4

Using a decade-old office suite on an obsolete operating system requires structural compromises:

Unlike Office 2008, Office 2011 brought back full VBA macro support in Excel, which is crucial for advanced data modeling.

The interface lacks the Ribbon toolbar found in newer versions, and it does not handle modern formatting as cleanly as Office 2011. 2. System Requirements and Prerequisites

Completely free and handles modern file formats smoothly in a browser.