If your legacy Mac can run a browser that supports modern web standards (such as specialized legacy browsers like Chromium Legacy or Interachy ported for older OS X versions), you can use Microsoft 365 Web Apps or Google Docs entirely within the browser, bypassing local installation limits.
Before relying on Office for Mac on Lion 10.7.5:
Being an older version, it does not support modern Office 365 features, cloud syncing, or the latest security updates. Microsoft Office 2008 for Mac Overview: A functional, slightly older alternative.
: Microsoft Office for Mac 2011 is the final version supported by OS X 10.7.5.
: Legacy versions like Office 2004 and Office v. X , which relied on PowerPC architecture, became completely unusable on Lion 10.7.5 because Apple removed Rosetta.
Not all Office versions work with Lion 10.7.5. Here is the definitive compatibility list.
Use the Microsoft AutoUpdate tool to update to Service Pack 3 (14.5.0 or later), which ensures better stability on 10.7.5.
If Office 2011 is not an option or presents unacceptable risks, consider these alternatives.