Andrew Connell has recently posted a fantastic feature matrix spreadsheet for SP2013 and Office 365 – based on this Microsoft TechNet article.

It’s much easier to digest because you can use Excel to filter for all of the “Yes” values or all of the “No” values and see very quickly what is or isn’t included in Foundation, Standard and Enterprise versions.

SharePoint 2013 Feature Comparison Maxtrix Spreadsheet

You can download it from here:
Andrew’s SP2013 / O365 Feature Matrix spreadsheet

You can also see Andrew’s original post here.