Is there an Excel viewer for Mac OS X?

Is there an Excel viewer for Mac OS X? I understand that the OS X developer tools are free and the Excel format is documented and I can teach myself Objective C on the web and set "write Excel viewer" as my first assignment, but I am hoping for a solution with a lower activation energy.

Solution 1:

Though not perfect: in Finder simply press the Spacebar to activate Quick Look, which offers a read-only view of many file formats without requiring to have the file's application installed.

Solution 2:

You can use the Office Web Apps instead, which also allows you to edit files. You just need a Microsoft Account (you can use any email address to make one, I think). Just pop the Excel file in your OneDrive space and open it from there.

Here's an example file that I have publicly shared.

Solution 3:

Numbers (from iWork) s capable of opening .xls and .xlsx files.